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Grex Radio Item 4: Shortwave Listening
Entered by danr on Sat Mar 28 22:09:27 UTC 1998:

Any of you into listening to shortwave broadcasters?  That's actually 
how I got into radio in the first place.  My grandparents had an old 
Philco console radio down in their basement which had a shortwave band.
I guess I was about 9 or 10 when my dad explained that you could listen
to radio stations from all over the world on that band.It didn't take 
me long to get hooked, and soon I was always anxious to go and visit 
my grandparents.

A couple of years later, I bought a shortwave set of my own.  I don't
remember the model number, but it was some kind of Hallicrafters.
Sometime after that, I graduated to a Lafayette HA-600, one of the
first transistorized SW radios.  It cost $100 back in the mid-60s.

My latest SW radio was a gift from my sister-in-law. It's a handheld,
battery-powered affair with an FM stereo band, the AM band, and six
shortwave bands.  It's pretty cool. I took it on a bike tour last 
summer and listened to the BBC out in the middle of the Upper
Penninsula.

98 responses total.



#1 of 98 by keesan on Sat Mar 28 22:19:02 1998:

We have two radios.  What sort of simple antenna have you tried?  I think our
radios may have been built back before there was a problem with stations
overlapping, hard to tune in just one.  One of them takes 12 D cells and is
'portable'.  We 'fixed' it by removing the corrosion from the batteries.


#2 of 98 by omni on Sun Mar 29 05:57:11 1998:

  For SWL, a long wire is probably the best bet


#3 of 98 by keesan on Sun Mar 29 15:19:58 1998:

What length do you suggest?


#4 of 98 by omni on Sun Mar 29 20:36:06 1998:

  It can be any length, but the longer the better. Maybe 50' or greater


#5 of 98 by keesan on Sun Mar 29 20:38:52 1998:

Jim brought home a little glass isolator to tie to a tree, and then tie the
antenna to that.  What about lightning?


#6 of 98 by omni on Mon Mar 30 05:13:55 1998:

  What about lightning? Of course, anyone would disconnect the antenna when
lightning is in the area. The chances of a hit are remote at best. Lightning
is usually attracted to things like trees and trailers and things that stick
up. I think you'll be OK.


#7 of 98 by keesan on Mon Mar 30 17:36:00 1998:

But if we tie the antenna to a tree?  Lightning struck a couple of years ago
in the driveway next to my apartment and fused some gravel, also killed
my neighbors' answering machine.  Maybe we should ground the tree better?


#8 of 98 by rcurl on Mon Mar 30 20:39:26 1998:

It will still follow the wire. There are a *lot* of antennas around
town - TV mostly - look on rooftops. Very few TVs get fried. One can put a
lightning bypass just before the wire enters the house. Better yet, just
disconnect the antenna during lightning storms. 


#9 of 98 by keesan on Mon Mar 30 23:02:59 1998:

Or only connect it while listening?  What does a lightning bypass look like?
I am sure we would forget to disconnect during storms.


#10 of 98 by rcurl on Tue Mar 31 06:00:13 1998:

A lightning bypass would arc over to ground outside the house. Might
be called a lightning arrester. Check in your ARRL handbook for more
specifics (I don't currently have an outside antenna, so haven't been
worrying about it).


#11 of 98 by keesan on Tue Mar 31 18:48:49 1998:

I am wondering why we seen to get better reception for Toledo on a
south-facing hill than in a low-lying area.  WOuld short-wave also be affected
by location, if it is AM rather than FM?


#12 of 98 by danr on Wed Apr 1 02:42:21 1998:

No.  The effect you see is due to the frequency of the carrier more
than the type of modulation on the signal. The station in Toledo is 
south of us, so that would explain why you get better reception
when on a south-facing hill.


#13 of 98 by rcurl on Wed Apr 1 06:44:13 1998:

Hills create radio "shadows" on their lee sides. This generally affect
commercial FM more than AM as the shorter wavelength of FM requires
more-or-less line of sight, while the lower frequency of AM diffracts
around obstacles more readily. 


#14 of 98 by keesan on Wed Apr 1 17:57:19 1998:

I have heard that AM is still more widely used in Europe for that reason,
becuase it can be heard in mountainous areas.  I wonder what radio reception
is like in the Rockies.  I used to get classical AM stations in Macedonia.
I also got football games from Texas there, for some reason.
        What sorts of things to people listen to on shortwave?  Seems like
every other station is religious, the rest mostly news, but since I don't know
Chinese or Japanese it is hard to tell.  I have fun trying to identify
langauges, but this palls after a while.


#15 of 98 by danr on Thu Apr 2 23:41:36 1998:

I enjoy the programs about a country's culture or about what's
happening in various parts of a country.  For example, one Radio
Slovakia program had a spot on the world's largest bryndze (a type
of goat cheese) factory.


#16 of 98 by keesan on Sat Apr 4 20:46:11 1998:

Help needed quick!  Jim was volunteering at Kiwanis and someone came in asking
for a shortwave radio so he could listen to Albania.  We can let him have one
of our two, but will also probably try to set it up for him.  Can anyone tell
us quick what wavelength and time to try for Radio Tirane?  We will have
enough trouble just communicating, the guy knows even less English thatn I
do Albanian.  (I will bring a dictionary).  And seems illiterate to boot.
I think he understood that we would stop by Monday after 5.


#17 of 98 by rcurl on Sat Apr 4 20:58:14 1998:

I did a quick search on http://itre.ncsu.edu/radio/RadioCatalogSW.html
but no Albania.


#18 of 98 by keesan on Sun Apr 5 16:19:59 1998:

Thanks Rane, I checked this same website and did a where is for Albania, and
got referred to www.gospelcom.net/twr/t_europe.htm.
Is this a religious broadcast?  They also do Armenian, Czech, 'Kabyly', etc.
What does it mean:  1915-1930 12367 MW 205 1467 K
                      1900-1915 345 MW    "     "
I presume the first is a time, but it is universal time, what time is it here?
We were going to stop by the guy's place after 5.
Maybe he knows more about what to listen to.
I will try to search on +Albania +shortwave now.


#19 of 98 by keesan on Sun Apr 5 16:37:37 1998:

The search yielded:
www1.gospelcom.net/trw/w middle east.htm  - TWR religious broadcasting to the
middle east, in AM from Cyprus and Montecarlo, and shortwave broadcast from
Albania to the east (Iran).  NO mention of braodcasting in Albanian here.

support.tandy.com/supportelectronics/doc3/3571.htm
A list of stations that can be heard in North America.  Broadcasts are in
English unless specified.  (Was not specified otherwise).
Radio Tirana at 7300 KHz.  

A US government report says that in 1997 Albania had 0 shortwave stations.

Rane or somebody, could you possible find the two religious programs and
explain what the 12367 MW (or 345 MW) 205 1467 K means, and the times.
And check at 7300 K to see what Radio Tirana is doing, if it exists?
Our radios are quite hard to tune, I would have trouble finding things, and
we have no antenna yet.
        I don't see the point in parting with one of our radios if there is
nothing in Albanian for the person to listen to.  But we will also try, this
evening after the ionosphere settles or whatever it does.
Thanks.  


#20 of 98 by rcurl on Sun Apr 5 20:56:36 1998:

Maybe there is an anti-government station broadcasting in Albanian from
outside the country. 

That table on gospelcom contains

Language        Albanian        Albanian 
Time (UT)       1915-1930       1900-1915
Day             12367           345
Band            MW              MW
Wavelength      205             205
Frequency       1467            1467

I take the day to be 1=Sunday, etc. MW = medium-wave, 205 = meters and 1467
= KHz. This is in our broadcast band and might be difficult to receive here.


#21 of 98 by keesan on Sun Apr 5 22:42:15 1998:

I think it would be about 6 hours earlier here, or 1:15 pm, and the guy is
at work then.  I also checked and they broadcast just religious stuff.
We may dissuade him from even trying.  But now I have learned how to read this
sort of list, we can hunt up some more interesting (existing) stations and
try to rig up an antenna.  Jim thinks it should be at least one quarter of
the actual wavelenght, but I could hear something with the little telescoping
one built into the radio.
        There is not a whole lot of point in owning a radio that plays your
language only 15 minutes/day, and only gospel.  I am trying to track down some
other Albanians here for them to talk to instead.  Quite a few are showing
up in Detroit from Kosovo, former Yugoslavia (with the ethnic unrest).
Thanks for steering us in the right direction, Rane.


#22 of 98 by keesan on Tue Apr 7 20:04:28 1998:

From bdamick@twr.org Tue Apr  7 15:53:42 1998
Date: Tue, 07 Apr 1998 10:46:34 -0400
From: Bill Damick <bdamick@twr.org>
To: keesan@cyberspace.org
Subject: Albanian broadcasts

From:     "C. Keesan"  ("keesan@cyberspace.org")
To:       info2@ihq
Date:     Sunday, April 5, 1998   1:15 pm
Subject:  http://www1.gospelcom.net/twr/w_middle_east.htm  (SMTP Id#:
17879)

We are trying to help an Albanian immigrant find some Albanian
language to listen to on shortwave.  From what I can figure out,
Radio Tirane no longer broadcasts shortwave.  From Durres
there are broadcasts in Serbian.  Your organizatin also seems
to be broadcasting from Albania in Farsi, Armenian and Kurdish.
A question:  Have you takne over Radio Tirana's shortwave
facilities?  Is anyone broadcasting Albanian shortwave?
THe US government claims there are not 0 shortwave broadcasts in
Albania.  PLease let us know as soon as possible, as we are
supposed to be going to see these people Monday evening.
(I studied a little Albanian and will try to help. They don't
speak English).
Sindi Keesan at keesan@grex.org
-----------------------------------------------------
Dear Mrs. Keesan,

Please for give the delay in responding to your request. I just received
it forwarded to me this morning.

Thanks so much for your inquiry about Albanian programming from Trans
World Radio.  At present, all of the Albanian language programming we
carry is on Medium Wave (standard AM) and is targeted to Albania from
Monte Carlo.  There would be no possibility of it being heard in North
America, even with the most sophisticated equipment.

As to other Albanian language programs being available here on
shortwave, that's also a long shot.  I don't know of any other
broadcasters who target Albanian programs to North America.  As you
mentioned, Radio Tirana did in years past, and may still be doing so,
although the times seem to change regularly.  Here's the most recent
schedule information I could find on the internet for Albanina language
programs from Tirana targeted to North America.

Albanian 0300-2200?UTC 6100 kHz.  (This would be 11PM through 6PM EST)
Albanian 0730-1030?UTC 7270 kHz.  (3:30AM - 6:30 AM EST)

I certainly can't vouch for the content, but it's worth trying. 
Daylight reception of either of these frequencies would be problematic,
but not impossible.

To answer your other question - no we haven't taken over Radio Tirana in
any sense.  We're just one of many broadcast organizations they lease
airtime to.  BBC, Voice of America, and others have all used their
transmitting facilities.  To my knowledge, we're the only Christian
broadcaster from Tirana.

Radio Tirana does maintain some of their own schedule in addition to
allowingothers to use the facilities.

As to other countries broadcasting in Albanian on shortwave - here's a
list of broadcasters who had Albanian programming at the beginning of
last year (it may have changed since then, but I doubt sincerely there
would be no Albanian programs on SW of any kind.  It's just too
important in the international political scene.  TWR is also using
high-powered AM stations in Albania that the Albanina gov't uses for
their own purposes through most of the day.):

Radio Bulgaria (low-powered SW targeted to the Balkans) about 3.5 hours
per day

China Radio International (no doubt mostly propaganda aiming to get
Albania back "into the fold") - 1.5 hours daily on several frequencies

Deutsche Welle (German Gov't broadcaster) - a bit over an hour per day

RAI International (Italy's gov't broadcaster) - 20 minutes per day

Voiuce of Russia (formerly Radio Moscow) - 1 hour daily on multiple
frequencies

Voice of Turkey - (gov't broadcaster) - 1 hour daily on 1 frequency

BBC - (from the UK) - two 30-minute segments daily on multiple
frequencies

VOA - (from relays in Europe) - about 3 hours per day

The real difficulty with getting any of these broadcasts in the US is
that SW is directional in nature and specifically targeted to the region
where the audience is - in this case to Albania.  Althoguh not
impossible to hear them in the USA, it would take some pretty fancy
equipment (and a good deal of expense).  Sorry to disappoint you.

Please let me know if you have any other questions.

Sincerely,

Bill Damick
Broadcaster Relations Department
Trans World Radio
bdamick@twr.org



---
Jim called and thinks he may have succeeded in explaining to the Albanians
that there is 'no Albanian radio'.  He may find out Saturday, if the guy
shows up a Kiwanis again.
.


#23 of 98 by rcurl on Tue Apr 7 20:14:58 1998:

Wow. Good think I don't understand Albanian.


#24 of 98 by keesan on Tue Apr 7 21:36:14 1998:

Mir dite, si jeni - Hello, how are you?  
(meer dee-te, see, yenee, in some people's transliteration)


#25 of 98 by keesan on Wed Apr 8 16:54:57 1998:

My thank you to Bill got the following answer, regarding the future of
shortwave radio.  By the way, what is digital shortwave broadcasting?

I don't know whether this will help much, but here's something I posted
to a SW newsgroup some time back that got some discussion going.  It's
on the perception that shortwave use is dying around the world.  Hope
you find it useful.  The copy you see here was sent to one of my friends
here in TWR.  The comments from Mr. Johnson that I was responding to are
marked with  >>. 

Bill
Trans World Radio

PS:  Where are you located?

----------------------------

Glenn,

Thought you'd like to see my latest commentary to the uninformed on
rec.radio.shortwave newsgroup.


> >I'm not sure anything needs to be done at this stage.  Shortwave
> >radio is becoming a relic of the 20th century.
> 
> Methinks the reports of SW's demise are a bit premature.  Although the
> tendency in Latin America and Europe has been to do away with SW
> domestic services, many of the larger int'l broadcasters still see it
> as an extremely viable medium for at least the next decade or two, and
> many for longer than that.  This has been encouraged by the
> developments in digital SW broadcasting.  Here's a few salient
> comments taken from a variety of sources on the web:
> 
> In a report presented by the Steering Committee of Experts in
> International shortwave Broadcasting of the European Broadcasting
> Union and High Frequency Coordination Council given in the spring of
> 1994, the following opening statement was made:
> 
> "It was recognized that SW is still the best available medium for
> international broadcasting and it should be retained for the next 15
> years at least.    ...it is unrealistic to make any reliable long-term
> forcast due to the speed of technological development, this seems to
> be a reasonable period of time for SW being replaced by other media.
> SW audience is declining in certain areas of the world, but in others
> it is still the most popular medium of information."
> 
> In a recent report (May 1997) by the government of Australia as it
> evaluated changes in its international broadcasts by shortwave, the
> following comments appeared:
> 
>  "In the section on transmission in this report, evidence was cited
> that showed short-wave transmission is a major growth area in
> international broadcasting. International competitors are heavily
> investing in transmission facilities throughout the region, branching
> into satellite rebroadcasting and entering into leasing and exchange
> arrangements with other broadcasters. Within this field, Radio
> Australia stands out as the only broadcaster who is unable to make use
> of off-shore transmitters to boost its signal to target areas. Despite
> being advantaged by its strategic location within the region, and
> therefore being petitioned for lease or exchange of air time, Radio
> Australia is the only international broadcaster which has not been
> able to trade in this increasingly competitive market. The following
> broadcasters use off-shore transmitters to target the Asia-Pacific
> region:
> 
> Radio Canada International uses transmitters in Korea, China and Japan
> 
> Radio France International uses transmitters in Japan and Thailand
> 
> Deutsche Welle uses transmitters in Sri Lanka and the Russian Far East
> 
> Voice of America uses transmitters in the Philippines, the Russian Far
> East, Singapore, Thailand (two sites), Tinian (Northern Marianas) and
> Sri Lanka
> 
> Radio Nederland uses transmitters in Madagascar to broadcast to
> Indonesia
> 
> BBC World Service uses transmitters in Singapore and Thailand.
> 
> In the past 12 months several of the national broadcasters targeting
> the region have taken steps to improve their short-wave signal
> strength. A summary listing includes:
> 
> China Radio International imported ten 500kW short-wave transmitters
> to boost its signals to Asia.
> 
> The BBC opened a new transmitter site in Thailand at a cost of 30
> million including four 250kW short-wave transmitters and seven
> aerials.
> 
> Voice of America contracted to build a new short-wave station in
> Tinian Island in the Northern Marianas using three 550kW transmitters
> transferred from Portugal.
> 
> Radio France International started using two short-wave transmitters
> in the Russian Far East targeted at China and Vietnam.
> 
> Radio Japan resumed the use of short-wave transmissions from Sri
> Lanka.
> 
> Voice of Vietnam started using a short-wave transmitter in the Russian
> Far East.
> 
> At a time when Australia is considering closing or reducing its
> international radio service, other countries are spending significant
> sums of money to boost their coverage and signal strength in the Asia
> Pacific region. With the end of the Cold War in Europe, the BBC and
> Voice of America are redeploying resources from Europe to Asia and the
> Pacific, while other western and regional broadcasters are making use
> of former Soviet transmitters in the Russian Far East and other former
> Soviet Republics."
> 
> Although Radio Australia did cut its international budget, the reasons
> were financial, and did not speak negatively about the medium of
> shortwave.  In fact, Radio Australia and the others mentioned have all
> recognized the necessity for continuing with, and expanding the use of
> shortwave for adequate audience reach.  This is illustrated by the
> comments from of the BBC in the same report:
> 
> "BBC World Service reported that it had recently expanded its services
> in the Asia Pacific region. Mr Sam Younger, Managing Director,
> clarified the organisation's priorities in the region to the
> Committee:
> 
> It may be helpful if I outline BBC World Service's thinking for this
> major region which combines information rich and information poor
> countries. It is also a top priority for the Foreign and Commonwealth
> Office, who indicated to us, at a BBC/FCO review of the region, the
> importance they place on radio as a means of promoting free
> information within China and enhancing the profile of the UK there. We
> plan to strengthen our broadcasts in Mandarin and must rely on short
> wave as the main means of reaching China and other closed societies in
> the area, such as Burma. We see Indonesian as another key language to
> be strengthened. "
> 
> On BBC World Service plans for rebroadcasting Mr Younger commented:
> 
> "We will pursue rebroadcasting opportunities wherever we can, but this
> is not a viable option for a number of countries in the region. We may
> well lose our present rebroadcasting in Hong Kong after June 1997:
> accordingly we are turning to the Internet for Cantonese and are
> already using this for English teaching. We think it essential that
> programming be tailored specifically for target audiences. The
> proportion of domestic BBC radio programming that World Service's
> English network uses is quite small and all our news and current
> affairs is specially made in-house, as domestic programming has a
> different and obviously domestic audience in mind."
> 
> Also focusing on Asia, the United States Recently launched Radio Free
> Asia, which uses shortwave as a primary medium.  Current construction
> on Tinian, near Guam, will equip RFA with three shortwave transmitters
> in excess of 500 kilowatts each for the express purpose of reaching
> limited-access countries in Asia.
> 
> For Africa, (estimated urbanization 35%) the opinions of most
> international broadcasters are summed up in the following remarks
> released by the BBC last year in their World Monitoring Report
> (January 5, 1997):
> 
> "International broadcasters have traditionally relied on amplitude
> modulation to broadcast on frequencies below 30 Megahertz [MHz], and
> mainly on shortwave (SW), to transmit their programmes.
> 
> Shortwave, and to a lesser extent mediumwave and even longwave, is
> attractive to international broadcasters and listeners alike, because:
> For listeners, receivers are relatively cheap and easy to operate.
> 
> For broadcasters, the initial investment in transmitters and antennas
> is quite substantial, but it enables them to reach huge numbers of
> listeners in many countries over a long period.
> 
> Reception on these frequencies, particularly on shortwave, generally
> suffers from rather poor audio quality, which is a major factor in the
> continuous decline in their popularity.  Local FM rebroadcasting was
> thus seen as an attractive solution to ensure the future of
> international broadcasting. However, the potential risks of local
> rebroadcasts being switched off by hostile "gatekeepers", or simply
> replaced by a growing number of local stations in need of frequencies,
> were not lost on international broadcasters."
> 
> Even more striking was a statement made by Robert Michael, head of
> research and strategic planing for Channel Africa in Johannesburg.
> The comment was part of an interview done last year in the Media
> Network program of Radio Netherlands. (Chanel Africa uses and
> subleases significant shortwave facilities for reaching all portions
> of Africa).
> 
> (From program transcript): "Robert Michel is head of research and
> strategic planning at Channel Africa in Johannesburg. He believes that
> it may be fine to talk about Internet and DAB, but Africa represents
> the real world, where there are far more have-nots.
> 
> [Michel] ... As far as Africa is concerned, we are not a continent
> where television will ever play the major role. I also have my doubts
> when we talk about DAB, digital broadcasting - the real world is
> different. A few kilometres outside Johannesburg, the tar will stop,
> and the dirt road will start. There's no mains electricity left...
> 
> And that is why I think we shouldn't talk about new technology, we
> shouldn't talk about television, we shouldn't talk about
> satellite-delivered programmes. What we in Africa really face is the
> problem: How do you effectively reach your audience? And I would think
> it's only by one means, and this is by radio...
> 
> Do we as international broadcasters want to reach these people? If we
> want to reach them, forget about television and forget about all these
> new technologies."
> 
> >What you are lamenting is the demise of a technology that has been
> >supplanted by the technology that made it possible for you to post
> >your concerns here.
> 
> While internet (usenet, www, etc.) is a really wonderful thing, it is
> highly unlikely in the next couple of decades that the areas that are
> principal targets of SW broadcasting will have sufficient internet
> penetration to the typical citizen at a cost effective to him to make
> any significant impact.  Scientific American issued a map earlier this
> year showing internet host densities - it was a striking illustration
> of how little internet is doing in Africa, Asia outside of Japan and
> Singapore, and India (where more than 70% of the population is rural).
> 
> One should also consider that in spite of all the non-English
> resoureces on internet, that it is still basically and English-based
> medium, and primarily a print medium at that.  While there is much
> debate on whether radio has much impact on the illiterate or
> marginally literate, there is litte doubt that internet will have
> virtually no effect on either group - which severely limits its
> effectiveness in most of the third world.
> 
> Might that change?  Sure, but not in the next ten to twenty years.
> 
> >This new technology will certainly replace shortwave radio in short
> >order for all but a few nostalgic hobbiest who cherish the past and for
> >those pockets of repressed peoples who have no other access to the outside
> >world. The Morse code is now deemed unnecessary and shortwave radio is
> >standing in the wings to take it's final bow.  Present shortwave
broadcasting > >budgets will soon be allocated for more direct communications
with targeted > >audiences. >  > Sounds a bit overstated to me.  Morse
communication ceased long ago to > be the principal use for SW, so its further
demise in the Ham Radio > community has little if anything to do with SW
broadcasts by > governements and other groups.  As to SW budgets being
reallocated, > that is true to a degree, but the evidence of new construction
above > seems to contradict that for the most highly-populated portions of the
> world. >  > >For most people, the present, and a yearning of the future will
suffice. > >Already, in many regions of the second, and even parts of the third
world, > >shortwave radio is no longer necessary in order to connect with the
latest > >in pop culture and what's going on.  The preferred media are local
AM, FM > >and TV.  The fact of the matter is shortwave radio is generally
relegated > >to diminishing lines on large government budgets and increasingly
present > >in the budgets of religious broadcasters who want to save the World.
It > >has ever-diminishing commercial value.  The average Joe outside the First
> >World context will grab the local clear station every time for pop music >
>and the government line.  It's only those few in the developing world who >
>desire an outside take on the news who will seek out a shortwave broadcast >
>from the BBC, etc. >  > Hardly a few.  BBC research claims an internaitonal
audience in excess > of 140 million on a regular basis.  As to "clear" local
stations, I'd > suggest you talk to some folk who have traveled to Africa,
India, > China, etc. and ask them about the reality of that outside of the >
cities.  Your comments concening the growth of FM and TV are true, but > again
with qualifications.  I'd be very careful of making sweeping > remarks which do
not reflect the reality for a lot of folk in the > third world. >  >
>Nevertheless, it remains a fact that shortwave radio is the only medium of >
>communications that can cross any border, regardless of any government >
>policy, and reach a little pocket radio fearfully clutched under the bed >
>covers. >  > Agreed! >  > >In that respect, here's to shortwave radio - may it
long live! >  > Thanks, we hope to! >  > Bill Damick > Trans World Radio >  >
PS:  we do about half of all our broadcasting on SW (about 600 out of > some
1200 hours weekly. The rest is on MW, FM, and satellite direct > where it's
better and more cost effective.  So, in places we've needed > to change, too.)


Any comments?


If anybody wants I can expurgate the above, if you will explain again how to
read expurgated files, in your response.


#26 of 98 by n8nxf on Thu Apr 9 12:34:47 1998:

I think that wireless, terrestrial, radio will be around for a long
time to come.  The reason I say that is because it does not require
infrastructure.  All one needs to communicate is a transmitter and a
receiver.  No wires, no fiber optics, no satellites, no internet.
Radio still works when the infrastructure fails, either by accident or
on purpose.


#27 of 98 by rcurl on Thu Apr 9 16:31:43 1998:

That is the fundamental justification for amateur radio - citizens can
provide communications in the event of any disaster or failure of the
infrastructures necessary for commercial communication. [This also
requires having independent power supplies.]

But I would definitely say, not "no wires".   8^}


#28 of 98 by n8nxf on Fri Apr 10 12:09:29 1998:

I guess you have not opened some of the modern transceivers lately.
No wires.  Everything is surface mount, even the antenna BNC.  ;-)


#29 of 98 by rcurl on Fri Apr 10 19:55:21 1998:

Those are surface-mounted wires. I think of a wire as a particular kind
of boundary condition on Maxwell's Equations, which does what, well,
wires do. 


#30 of 98 by keesan on Fri Apr 10 22:32:28 1998:

Wires = traces?  Apart from a good antenna, what do you need to broadcast
shortwave?  Is ham radio on the same bands as shortwave?  What is longwave?
What bands is public service and who uses it?  (All AM, I assume).  What are
the FM frequencies outside of standard broadcast used of?  We once fixed an
FM reciever that was for either longer or shorter wavelengths, I forget.


#31 of 98 by danr on Fri Apr 10 22:39:00 1998:

You need a transmitter, obviously. :)

There are ham radio bands in the medium wave, shortwave, VHF, and
UHF areas of the RF spectrum.  

FM is a type of modulation, not a band per se. The FM band on radios
is so called because in that band the broadcasters use frequency
modulation.


#32 of 98 by keesan on Fri Apr 10 23:34:56 1998:

I have some idea what FM is, but was wondering what the wavelengths not on
my radio are used for, since we ran across a receiver for them.

What does a shortwave transmitter consist of?  


#33 of 98 by rcurl on Sat Apr 11 05:07:44 1998:

I believe you said you had borrowed an ARRL Handbook. That contains 
complete descriptions of all allowable modes on all amateur bands, and
designs and illustrations for transmitters and receivers. Find a SW
listening book/magazine for whats on other bands besides amateur, above
the AM broadcast band. 


#34 of 98 by jerome on Fri May 8 17:55:45 1998:

keesan, do you remember what the frequency range of that radio was?  Some
parts of the world (Japan is one place, I think) have an "FM" broadcast
band that goes from 70-something MHz to 90-something MHz, as opposed
to ours at 88-108 MHz.  108-136 MHz is used for aviation (AM).  There is a
small band near 162 MHz used for NOAA weather radio (FM).  If you're 
interested I can send you a list of other frequencies.


#35 of 98 by keesan on Fri May 8 18:03:04 1998:

I had noticed that on the some list of radio stations on the Internet, Japan
had a frequency that we do not.  The FM radio is long gone, but I do recall
that there was not much of anything on the extra frequencies, except a bit
of talk.  SOmeone must have know what to do with the radio, as it was sold.
What is 70-88 MHz used for around here?
        I hear that there are some very low power broadcasts (FM stereo?) put
out at various student dorms, would that be on the regular frequencies?


#36 of 98 by jerome on Sun May 10 21:39:10 1998:

The low power stations that show up in student dorms typically fall int
into the normal 88-108 band.  I think they usually hang out on the low end
(near 88) though.  As far as other things in the 70-88 MHz ban, it's
mostly TV and RC toys.
50-54: HAM
54-60: TV Channel 2
60-66: TV Channel 3
66-72: TV Channel 4
72-76: RC toys (airplanes, cars...)
  75 : Aviation Marker Beacons
76-82: TV Channel 5
82-88: TV Channel 6


#37 of 98 by keesan on Mon May 11 02:50:35 1998:

I don't think that receiver was labelled TV band, so it must have gotten
the higher frequencies.
        Re shortwave, while testing out a new radio given to us, with
shortwave, I thought I had tuned to 3.0 MHz (SW1), and the strongest of two
strong stations that I got at 6 pm this Sunday (today) was crystal clear
Albanian news!  Followed by business news, sports news, and a lot of 
commercials for businesses in Hamtramck and Detroit with 810 or 313 numbers.
At the end of the hour-long program they identified themselves as WMZK,
station of the nations.  The next program was Polish.  What I was hearing was
AM 690 (someone had pasted over the AM indicator).  I will inform our
local Albanian, who stops by Kiwanis every week asking 'shortwave radio?',
that he can hear Albanian on medium wave, Sunday evenings.  There was even
some music, and an English and Albanian ad from a 'spiritual advisor' (fortune
teller).  I may call the Albanian travel agency in Hamtramck to confirm that
there is no Albanian shortwave broadcast here at a time when it can be heard.
It was exciting hearing about flights from Detroit to Podgorice via Rome, adn
the soccer scores, and waitress wanted postings in Hamtramck.  Very little
could be heard on shortwave at that time.  Where does one attempt to attach
an antenna to a boombox with a broken FM antenna and good AM reception?  There
is no place to attach externally.  When I touch the stump of the FM antenna,
it improves reception a bit, but buzzes (with a fluorescent light on, I think
I may be conducting AC signals at 60 Hz.)


#38 of 98 by omni on Mon May 11 13:44:45 1998:

   The AM antennae in boomboxes are typically ferrite rods. You can't do
anything to improve on that unless you want to tear the entire system apart
and then that defeats the purpose. On the other hand, the FM can be improved
by either adding a long wire, or simply replacing the antenna by buying a
replacement. Purchase radio is a good source for replacement antennae.


#39 of 98 by keesan on Tue May 12 00:20:34 1998:

So why did putting my hand on the FM antenna improve shortwave reception? 
Can you add a wire to the AM antenna to improve shortwave?


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