Lee -
That sounds about right for the T-4XC Remember, this IS AM! About 20W output is typical, you
only want about 150 mA on voice _peaks_, or about 50W out.
You can swap out V7, and check the value of R63, but it doesn't sound out of line. Of course it HAS
been about 35 years since
Lee -
Last resort, I READ THE MANUAL!! :-)
The L-4B manual says that the drive should be adjusted for approximately 500W INPUT to the L-4B with
no modulation.
Now That was written when transmitter power was regulated by INPUT power, and would
theoretically result in 2000W INPUT of AM
Lee -
I'll never learn... The '500W input carrier' level for the L-4B is for an AM input, i.e. full
carrier.
I still think that 15-20W input to the amp for about 150 to 200W output carrier
is about right.
I'll be quiet now and wait for someone who knows what they are talking
am
Subject: Re: [Drakelist] Idle current in AM mode of t-4XC
Lee -
I'll never learn... The '500W input carrier' level for the L-4B is
for an
AM input, i.e. full
carrier.
I still think that 15-20W input to the amp for about 150 to 200W output
carrier
is about right.
I'll be quiet now
Years back I ran a C-Line with a Ameritron AL-80 ( single 3-500Z ) which
resulted in a 100 watt carrier. The amps grid current peaks where kept in the
200 ma range.
73, Gary___
Drakelist mailing list
Drakelist@zerobeat.net
Hi gang...
Using the T-4XC and L-4B on AM for the first time tonight..CAREFULLY.
OK, tune up good, go to AM have about .12 amps plate current at idle
and 15 watts out with NO Mic input.
Seems a little high?
Also, with that scenario...I get 350 MA idle plate current on the L-4B
with no
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