Guess I am not sure how to post a listing -- thanks..
Larry FW6EF
----- Forwarded Message ----- From: A Lawrence Fibich
<lfibich@sbcglobal.net>To: amps-request@contesting.com
<amps-request@contesting.com>; amps-owner@contesting.com
<amps-owner@contesting.com>Sent: Friday, October 21, 2022 at 11:32:03 PM
PDTSubject: help
Subject: Questions: Connecting a Drake Amplifier
Hit a roadblock I am not understanding. I wanted to connect a Drake L-4
Amplifier (also have a Drake L-7 - same problem). Looking at the input the
unit/s want - they want AGC input - I am familiar that ALL other Amplifiers I
have used accept/require ALC input. I am trying to drive either of these units
with a ICOM IC -756 - it only outputs an ALC. Of course the definitions of AGC
and ALC is not the same - or about the same functions.
Then also - beyond my understanding clearly caution in the manual ... "WARNING:
Set the Transceiver output power and linear amplifier ALC output level
referring to the linear amplifier instruction manual. The ALC input level must
be in the range 0 V to -4V and the transceiver does not accept positive
voltage. Non-matching ALC and RF power settings could cause a fire or ruin the
linear amplifier."QUESTION: 1. How do I connect the ICOM to the Drake Amp? - ?
what if not connecting anything to the AGC on the Amp?2. How could a
'non-matching ALC and RF power setting cause a fire? ?over heating the Amp?
Thanks for any assistance73W6EFLarry FibichSacramento, CA area
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