Joe ...
The LA-1k (like all amps) is just an additional power amplifier
added to a transceiver's power amplifier.? All it wants is RF
drive and that drive is controlled by the RF output control of
the transceiver, not its mic gain or compression level.
Initially (with the LA-1K OFF or in STBY), these two transceiver
parameters (mic gain and compression level) are set according to
the transceiver's manual as indicated on the transceiver's meter
and left there unless one changes microphones or goes
through a second puberty.
Assuming whatever ATU being used has done its matching, the
LA-1K is put in OPERATE, the transceiver keyed in either CW or
RTTY, and the transceiver's RF OUTPUT control increased until
the LA-1K is showing 1000 watts on its meter (but in no case
should transceiver drive exceed ~50 watts on a peak-reading
wattmeter).? Then switch to whatever mode you want.
Mic gain and compression should not be used to adjust
the LA-1K's output, nor should the LA-1K's output be set in SSB mode.
In SSB, output
power will vary with modulation.
Others talk about running their LA-1Ks at 1200 watts.? It's your amp and your money, but the LA-1K is rated at 1000
watts.?
73,
Kent
K9ZTV
On 12/24/2022 10:04 AM, Joe Loverti
wrote:
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The 50 watts drive is not actually measured. It's where I
set 'mic gain' on the 7300.
