Radius Microphone Question

sheriffjimmylee · Post by **sheriffjimmylee** » Mon Nov 12, 2001 12:46 pm

Just wondering if there is a way to scan with the radio while it is not on the hang-up clip. I know I can wrap a bare wire around the mic to ground it out, but I'm not to fond of that idea. If there is any modifications to do this let me know...thanks!

patrol186 · Post by **patrol186** » Mon Nov 12, 2001 1:27 pm

I think I had to program my Maxtrac 300 as though it had a desk mic for it to work,
I will have to read the radio and get back to you
Ben

Post by **alex** » Mon Nov 12, 2001 1:31 pm

On 2001-11-12 15:46, sheriffjimmylee wrote:
Just wondering if there is a way to scan with the radio while it is not on the hang-up clip. I know I can wrap a bare wire around the mic to ground it out, but I'm not to fond of that idea. If there is any modifications to do this let me know...thanks!

You can go into the mic itself, and desoder the wire that goes to the metal clip, and soder it right to the ground wire. This works really well

That's if you have a mike you can easily unscrew.

Its been a while, but I believe the sense wire is gray, and the ground is the standard black.

-Alex

sheriffjimmylee · Post by **sheriffjimmylee** » Tue Nov 13, 2001 8:49 pm

Alex, thanks for the info...I got it to work just fine by desodering the grey and sodering it to the black.......Greatly Appriciated,
--Jim

raymond345 · Post by **raymond345** » Wed Nov 14, 2001 5:37 pm

Most of the mobile radios
like maxtrac/radius/gm300 etc can
wire direct from hook sw wire to ground wire inside radio head to scan. Do it all the time
Raymond

Post by **HumHead** » Wed Nov 14, 2001 7:34 pm

On some older radios I've run into (not just /\/\), the radio won't transmit at all with the mic grounded in the holder.

Most of the mics tie PTT to ground, and the PTT switch normally has an unused normally closed pole, with the ground on the common terminal, and the PTT on the normally open pole.

My favorite trick is to remove the monitor line from the rear contact in the microphone, and attach it to the normally closed pole on the PTT switch.

When the mic is unkeyed, the monitor line is grounded through the PTT switch. When you depress the switch half way (because the switch is break-before make), you can monitor, and with the PTT fully depressed, the monitor line is lifted, the PTT is grounded, and the radio transmits.

Just my .02