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Grex > Radio > #1: Welcome to the 2nd edition of Radio | |
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| Author |
Message |
| 25 new of 123 responses total. |
devnull
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response 81 of 123:
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Jan 30 03:00 UTC 2000 |
So do the majority of FM stations transmit SCA?
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gull
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response 82 of 123:
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Jan 30 03:29 UTC 2000 |
Re #80: I forgot that the 19 kHz tone gets doubled to get the actual
subcarrier frequency. Thanks.
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jerome
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response 83 of 123:
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Jan 30 18:09 UTC 2000 |
resp:81 A lot of them don't, actually. One possible reason for this,
according to the article, is "In the case of SCA, modulating one
subcarrier of a stereo signal uses up about 10% maximum of the total
75 kHz deviation (100% modulation). In practice, that reduces the
main channel's signal strength by about 1 dB. Normally, such a drop
in signal level would not be noticeable. However in areas with
crowded FM bands, every dB counts in the race for ratings, and
revenue." The article also mentions that there is sometimes a second
SCA subcarrier at 92 kHz, which (if used) would take even more power
away from the main channel.
I live in a different area now than when I built the radio. All of this
SCA talk is giving me the urge to fire up that radio and see what this
city has to offer in terms of SCA.
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gull
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response 84 of 123:
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Jan 30 20:33 UTC 2000 |
SCA used to be popular as a way to broadcast commercial-free background
music for stores and such. I'd imagine it's less popular now that there are
satellite services such as Muzak.
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jerome
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response 85 of 123:
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Jan 31 03:15 UTC 2000 |
I dusted off my SCA receiver. I found three SCA transmissions: One
background music, one data transmission, and one that sounded like some
type of community service thing. I can't remember if I have the receiver
set for the 67 kHz subcarrier or the 92 kHz one (I should have brought
that adjustment out to the front panel), so I there might have a few
others that I missed.
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goose
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response 86 of 123:
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Jan 31 19:12 UTC 2000 |
http://www.northcountryradio.com of course is where you'll find North
Country Radio!
Jerome, do you live in Ann Arbor?
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jerome
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response 87 of 123:
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Jan 31 22:51 UTC 2000 |
resp:86 (second line) Negative.
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jerome
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response 88 of 123:
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Jan 31 22:54 UTC 2000 |
Oh, and if anyone does want to build North Country Radio's SCA/FM Stereo
receiver, be advised that there were a few mistakes in the article,
including on the schematic. I would be happy to supply details to anyone
who wanted to build one.
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abndaddy
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response 89 of 123:
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Oct 12 23:40 UTC 2000 |
Hello Ya'll! My name is Chad and I am a Special Forces Communications Sergeant
in the Army. After going through the school here at Ft. Bragg I have developed
a "slight' interest in radio communications. I am 15/15 in code, and have
experience with HF,UHF,VHF communications......but I really think that I'm
going to pick up QUITE A BIT here; And that's why I'm here! I need some of
you "OLD-TIMERS" to point me in the right direction for when I get to my Unit
in Germany!
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rcurl
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response 90 of 123:
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Oct 13 03:36 UTC 2000 |
This conference is pretty quiet, although there are a lot of hams around
about, and some even lurk here. But, raise any questions you want, and
we'll see what expertise is reading.
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ball
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response 91 of 123:
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Dec 10 11:06 UTC 2000 |
Re #90: I'd noticed it was pretty quiet in here, but I do
check it periodically for signs of life. Perhaps I should
start asking some dumb questions in an attempt to kick-
start some threads of conversation? =o)
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xdiablox
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response 92 of 123:
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Jan 28 15:51 UTC 2001 |
hi y people im new give us some help danieldunford@yahoo.co.uk cheers
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gull
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response 93 of 123:
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Jan 28 16:57 UTC 2001 |
Could you be more specific? ;)
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frzngost
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response 94 of 123:
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Apr 7 04:17 UTC 2001 |
Hello from Jim VE9MHZ /VE3 in Morrisburg, Ontario Canada
My packet HomeBBS is KA2JXI.#NNY.N.USA.NA in Ogdensburg, New York
My AMPRnet Gateway-BBS is mtlgw.ampr.org
73 and hope to chat with you later
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eprom
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response 95 of 123:
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Apr 8 23:37 UTC 2001 |
re#94 Cool callsign! :)
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goose
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response 96 of 123:
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Apr 11 17:32 UTC 2001 |
Welcome Jim.
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sadko
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response 97 of 123:
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Feb 27 22:55 UTC 2002 |
Hi ev erybody. Ham call is kd2nw Tom from NY Can somebody give me some
hints on setting up my computer and rig for PSK?
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goose
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response 98 of 123:
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Mar 20 15:24 UTC 2002 |
Sure, get a good interface (build or buy, I built) don't overdrive the input
of your rig, and use lower power (I use 50w on my 100w rig) due to the high
duty cycle of psk31.
See you on 20M!
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goose
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response 99 of 123:
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Mar 21 19:32 UTC 2002 |
Just a little self serving info: Two weeks ago I passed my Extra Class upgrade
exam! I've also applied for a vanity call and hopefully will be K8MZO in
short order.
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rcurl
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response 100 of 123:
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Mar 21 21:32 UTC 2002 |
dahditdahdit dahdahdah dahdit dahdahdit ditdahdit ditdah dah ditditday
ditdahditdit ditdah dah ditdit dahdahdah dahdit ditditdit.
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glenda
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response 101 of 123:
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Mar 21 22:03 UTC 2002 |
Congrats. I am currently planning on taking at least my General upgrade exam
at Dayton. If I can find the time to cover both books, I'll try for the
Extra. Staci is hoping to take her
tech Lite.
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goose
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response 102 of 123:
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Mar 21 22:44 UTC 2002 |
- .... .- -. -.- ... .-. .- -. .
That's great Glenda. I hope you can get both out of the way. Wish Staci luck
from me too. Are all of you going to Dayton this year? IF so, I hope to see
you there.
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glenda
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response 103 of 123:
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Mar 21 23:49 UTC 2002 |
STeve, Staci, and I will be there. Damon doesn't like all the hub bub. I
think it may stem from the year he was 4 and got lost twice in less than an
hour. He was very independant even then and just would not stay right next
to us and used the old Mom thinks he is with Dad and Dad thinks he is with
Mom trick to go where HE wanted to go.
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goose
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response 104 of 123:
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Apr 1 14:26 UTC 2002 |
If I can get a couple more VEs, I can give you and your family exams.
I just received my VE credentials in the mail over the weekend.
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rcurl
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response 105 of 123:
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Apr 1 15:05 UTC 2002 |
Exams are given monthly in Ann Arbor through the ARROW amateur radio club.
See http://www.cyberspace.org/~arrow/ (The page will be updated shortly
for their next meeting, which will be on Wednesday, 10 April, at 7:30 p.m.
The ARROW station will open at 6:30 for any hams wishing to use the HF
radio, and also following the meeting.)
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