[1000mp] Help with Microphone Selection

Chris Brougham brougham at eciad.ca
Mon Mar 7 19:45:04 EST 2005


Hi Everyone,

Thanks so much for the replies. I fiddled with it extensively last night 
(I even swapped my FT-817 MH-31 mic) .... transmitting into my dummy 
load. Pete's (N4ZR) suggestion about setting (10:30)  were right on with 
respect to the compressor, peaks no more than 10dB. But the ALC was 
about 2 or 3 bars past the red line.

Power output was A-OK from the internal RF meter peaking at 75 watts no 
problem (I was using the 75 watt setting as my load is only good to 100 
watts). The external watt meter on my Palstar tuner showed output 
between 20 watts and 40 watts. Again this is with the ALC peaking about 
2 bars past the red line. When I reduce the ALC so it stays within the 
red line I have to put the compressor up to about 12:00 to see any 
compression at all (about 3 or 5 dB). Doing this I get about 15 to 25 
watts output within the ALC red line. Of course, when I whistled into 
the mic I saw a full 75 watts at both the internal RF meter and the 
Palstar's RF meter.

I tried the same thing on my backup HF rig (TS-570) and I noticed that 
actually the Mark V puts out a little more power with the same sort of 
settings.

No Class A mode was used and I speak rather closely to the mic actually 
touching it with my lips.

Does this sound OK? I think it must, but mostly I use CW and RTTY so I'm 
used to seeing that Palstar mimic the output that the internal RF meter. 
If tis is OK, what sorts of things can I do to get more drive to the 
antenna?

I really appreciate the help!

PS

I'm going to try and test the audio with another station today ...

-- 
Chris VA7CAB



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