Jim Candela wrote:
I am going to state here as my opinion that
with linear AM you should monitor the RF output with a scope, and use
the Trapezoid pattern when optimizing the linear controls, drive
level, and audio level.
I have one set up but can't figure out a convenient way to get at an
au
From: W7CE <[EMAIL PROTECTED]>
> My
> purpose was to make sure members of the group are aware of the
> long-established DX window from 3789 to 3800. It is officially 3790 to
> 3800, but has drifted down an extra kHz in the past few years (those DXers
> are are real bandwidth
Not so fast, Jim...
Actually there was a video from a TV show recently where
a ham sending a message via CW got a message through
FASTER than a digityal message sent by more modern
technical means. I am sure many of us saw that.
It was shown on a national televised show. It made me VERY
proud
Called CQ on 3880 Khz this afternoon and thank goodness on my 5th attempt a
very nice gentleman from Fort Washington, Maryland called me on "slop
bucket" - I mean SSB. I caught my call and quickly turned the emission
control on my Collins 75A-1 to CW to make contact. He switched his rice box
Sounds good to me Mike except I rarely operate 15, maybe I should. I certainly
will put .425 in my scanner.
73, Charlie, K0NG
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The transverter socket has nothing to do with the output relay switching.
There is another socket for "external" switching (such as a linear) but be
careful if you have 120 VAC relays, they should be keyed with another relay
in between the two connections.
On second thought, maybe the attenuato
Use the delete key or learn how to use filters.
Sure beats stifling discussions.
From: [EMAIL PROTECTED]
> How much longer are we going to drag this thread out? My in box is way
> overloaded! Sounds like the rachet jaws on 3890!
>
> 73.
>
> John, W4AWM
> Member AMI
> __
Jack,
Others have commented on their thoughts concerning carrier control. One
suggestion I have not heard however is to reduce the amount of carrier control
to no more than 3 db. This might be the ticket to gaining linear amp efficiency
without the nagging extreme carrier pump common to stock
Corrections to the previous message: where ever you see TS830 replace it
with TS430. The TS820 entry is correct.
John
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Yes, by all means give it a whirl. That's how discoveries are made.
Funny, that you should mention the SB200 in that way. BJ, WB5PKD, and I are
using the SB200 to drive the grids of the 250THs. We drive the SB200 with a
modified TS820. The TS 820 put about 10 watts into the SB200 and the SB200
Hello Jack,
Controlled carrier has tradeoffs. You are trading reduced linearity and
tricker audio adjustment for greater PEP. Not that it can't be done and
sound reasonably good.
Another point is that tubes with zirconium or titanium on the plate NEED to
get red to getter properly. I'd b
Clay, W7CE said --
I have heard talk of attempting NA to Eu AM QSOs in
the window. I
don't
have any problem with this.
--
I worked six countries this winter on 3790Kc running
complete, DSB, full carrier AM. I would wait until I
heard a station calling CQ or finishing a contact, and
would th
Brian, daggone !
Must have just missed you since the recording you made
is of my final transmission for Saturday night.
Reception's not bad on that particular take, and
thanks for passing it along.
Mike, you had said in
An Idea for 15 Meters
About establishing QSOs at 21.425 and upward to handle
Hey Jack:
From years back when I worked around broadcast stations I always wondered
about the plates of the modulator and finals being so red that I commented
to an engineer. He just laughed and said not to worry about cherry red. It
is when they get white you should worry.
73 Jim
W5JO
W
John Coleman ARS WA5BXO wrote:
As for the T60, I'm not saying "don't do it". You will want to make
your on observations for the experience. But, the TS430, when operated
properly on AM, will get you better signal and audio reports and keep your
band neighbors friendly.
Thanks for th
For using the Kenwood TS430 as a VFO to go into the Knight T60, yes
you can use the AM mode with audio gain turned down on the TS430 and put a
dummy load on the TS430. I don't remember what voltage is required at the
T60 input. My guess would be 5 - 10 volts PTP but it has been to long ag
For good I hope. We have beat this subject to death. You did (or didn't
do) what you chose and I and a lot of others did what we wanted. I would be
glad to sign /4 if that was the law but it isn't so I don't.
73 OM
Bob W6TR in FL
- Original Message -
From: "Todd, KA1KAQ" <[EMAIL PROT
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