[ARC5] ARC-114 Progress

[Robert Eleazer]

Well, I got the ARC-114 working.  I had to add a mike preamp and I found that the mike from a general aviation headset won't do the job, with or without a preamp.  The preamp I used was a Velleman kit I bought from Fair Radio.  After I figured out you actually had to apply power to it and adjusted the output just right, the preamp combined with a Audio Technica ATR-20 500 ohm mike does the job. The preamp is easily capable of overdriving the ARC-114.

RF power output at 52.50 MHZ seems to be about 20 watts.  During receive the set draws about 400 ma and during transmit about 2 amps, which is rather more than the 30W given in the specification.

I am assuming that the setup will work with my ARC-116; we will see.   I already have found that the ARC-116 will operate down below the 225 MHZ bottom end of the military UHF band. 

Maybe I'll do a little write up for Radionerds.com

Wayne
WB5WSV

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