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Date: | Sat, 11 May 2013 19:44:18 -0400 |
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After putting this off for a number of years, I finally decided to build
a box to give me more PF keys for the 590. Turns out I had all I needed
right here. It's not completely complete yet, since I have to drill
holes for switches, but it has been wired up temporary and seems to work.
Main component is an old MFJ TNC to radio interface. The KAM is long
gone and I clipped the 13 pin DIN off it some time ago, but it has an 8
pin round mic jack on the front and 8 wire mic cable with plug coming
in the rear.
Also had the needed switches and other odds and ends laying around.
One thing I learned is that the 590 will let you change the UP/DOWN
buttons into additional PF keys, so I will wind up with 6 pf keys on
the box and the original 2 on the radio.
Anyone using a microphone with UP/DOWN buttons can reassign them as PF
keys if you don't need the UP/DOWN function.
Also added an RCA jack for PTT, and a 1/8 jack for mic input, since the
mics I use all the time have 1/8 plugs. Maybe later I'll add a mic
input for a condenser mic, using the 8 vdc found on pin 5 of the 8
pin cable.
73, Steve KW3A
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