Adjusting Speech Processor
Problem: I have a question for the
reflector regarding the proper adjustment of my new 1000MP when using
the speech processor. If I adjust it according to the procedure on page
37 of the owner's manual (use MIC control to set ALC, turn processor on,
use PROC control to set db's of compression, use RF PWR control to
reduce ALC to red line) by the time I have backed off the RF PWR control
to get the ALC within limits the output power is down to about ten
watts. As soon as I start to turn the PWR knob, the power begins to
decrease and the ALC first increases, then turns around and reaches the
red line with an output of ten watts. Settings for 100 watts output with
the processor on are: MIC and PROC knobs about 10 o'clock and RF PWR
full clockwise. This gives about 5 dB of processing and ALC about 2
ticks out of range.
the manual insert) If you are referring to the half page
insert on the thin paper that some folks got in their manual, titled
"Corrections to FT-1000MP EDSP Insert for Manual", I have it and can FAX
or mail it to you, if you want it. My manual did not come with this
insert, but was lucky enough to get it from a friend, Gary, W0TM. "If
anyone else did not get this insert, you need it as the manual is
incorrect on menu settings in 2-9, 4-4, 4-5, and 7-7. If Yaesu does not
have it, let me know and I can FAX or mail it to you. Or perhaps this is
already entered in to the archives as a document. I don't remember."
The insert Lee mentions came with my manual, but the addendum that Ron,
N7UR mentioned about the RF Pwr/ALC error on page 37 did not. The page
37 thing has cropped up before on this reflector, but this is the first
time that someone has mentioned an addendum about it. Earl, K6SE
When I first tried that procedure on page 37, I had the same results as
Dave McGee did. Adjusting the RF power control to set up the processor
didn't make any sense to me, especially when using the MP to drive my
Alpha 76CA, so I decided the book procedure is in error. My final
settings are Mic Gain at 9 o'clock, Proc at 11 o'clock, and RF Pwr as
needed to drive the amp to full power. This works ok for me. 73, de
It probably varies between vintages. My '95 vintage MP had the RF Pwr
control that was overly critical and required the subsequent mod.
Problem corrected in later MP's. Check the archives and there should be
some information on that.
In the instructions that accompany the RF Power mod, if find:
for this mod.
1. Set the mode switch to CW and adjust the output (i.e. 50 watts).
2. Set mode switch to SSB and processor off. Key transmitter and adjust
microphone gain for proper ALC level on the ALC meter.
3. Press the processor switch to on. Set meter to COMP position and with
transmitter keyed and modulated, adjust comp level on the meter for
approximately 10 db.
NOTE: It is normal for the ALC reading to go above the top of the ALC
zone intermittently. I personally find that if I'm adjusted within the
ALC range with the processor off, turning the proc on with about 8 dbs
doesn't seem to push anything out of range and power output stays as it
should. Joel, W0JDJ