Donald enjoyed your post about broadcasting with the DX-35 when in
college. Since the Statute of Limitations has expired for most of us
on such activities, I wonder how many of us did the same thing in our
younger years. Heck, I know I did it in hight school with a buddy of
mine, and then with my daughter when she was 8, now in her 30's. Whew,
were we on the cutting edge back then HI. And our mantra was:
Coverage, coverage, coverage! What memories you had me remember.
Anyone else do the "Cutting Edge" in the AM bands?
73 Robert W4RL
Disclaimer/confession: Riley, please have compassion on this old man
with his prison sentence, my grandchildren need shoes.
Donald Sanders wrote:
I have been running controlled carrier since the first DX35 in about 1956
and now with the DX60B. In all those years I have never had a station
complain about non-quieting between words or thoughts. I have been told they
noticed the s-meter kicking a bit or signal seeming to increase with
talking. I have modified the voice range on all those i operated to have a
bit more bandpass and have been told that with the D-104 I have very natural
sounding audio. In College I operated a DX 35 modified to 1500 KHz as a
carriercurrent dorm broadcast transmitter and with a little mod to the
modulator we had very good sounding audio and never a complaint about
distortion, hum, audio characteristics and most enjoyed the music we played
though not all enjoyed the selections.
I believe in this day of high cost iron, that properly operated carrier
control modulation into a amplifier is cost effective and functional. My
SB220 likes the DX60B output and I get good results. All that said, it is
necessary and imperative for the user to have and use the test equipment a
to assure clean output and proper setup of the transmitter and amplifier. If
someone does not know what to have or how to use it then he/she should seek
the advice of the many experienced AM operators to set up the equipment.
Healthfully yours,
Don W4BWS
----- Original Message -----
From: "VJB" <[EMAIL PROTECTED]>
To: <amradio@mailman.qth.net>
Sent: Friday, April 06, 2007 3:58 AM
Subject: [AMRadio] AM - characteristics
Don K4KYV said -- Controlled carrier AM reduces the
duty cycle demand on the amplifier.
Of course this is true, but attention needs to be paid
to the loss of carrier's value as part of the
wholesome AM experience.
(SNIP)
Reducing the carrier often shortchanges the listener,
and therefore is not recommended.
Paul/VJB
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