Turner "Expander 500" help please.

[Bill Eitner]

Tbone107 wrote:
>
> I have a Turner "Expander 500" desk mic that I bought back in '77 maybe '78. It
> served me well on my old Siltronix 10-11C. It's been well over 15 years since
> I've had the Siltronix or this mic wired to anything. I now need to wire it to
> a couple of radios. I have the pin-outs for the radios and have homebrewed
> adapters for each. What I need to find out is which wire does what. The audio
> and ground are obvious, but before I start experimenting and possibly smoke the
> mic or either rig, can anyone help with the other wires on this mic? Thanks.
> Tom

Don't worry about "smoking" the rigs. Modern CBs don't
use mechanical relays that can be damaged by grounding
the relay coil low side.

Unless you're running old SBEs you have nothing to worry
about.

E-mail me for specifics: kd6...@earthlink.net
--
-------------------------------------------------------------------
-=[Bill Eitner]=-

Link to AM Tutorial and rec.radio.cb FAQs:
http://home.earthlink.net/~kd6tas/
-------------------------------------------------------------------

[Tbone107]

[CLFASTBACK]

l am sorry can't help too much but l have been wiring mics for over 25 years
doing the hit and miss approach and so far never burned anything up . Sometimes
it takes a while but l walk away and then get it to work . Make sure your
battery is good , that will save lots of time too .Hope you get it wired .

[TRA1N]

the only damn mic i ever saw that ALSO needed to be "peaked" as you would a
radio......strange mic but they work well when done right.
www.cbmods.com
tr...@cbmods.com
tr...@aol.com
tr...@midsouth.net

THOSE WHO CAN, DO
THOSE WHO CAN'T.....SEEK THOSE WHO CAN ! ! !
JUST CALL ME BUBBA ! ! ! !

[Bill Eitner]

TRA1N wrote:
>
> the only damn mic i ever saw that ALSO needed to be "peaked" as you would a
> radio......strange mic but they work well when done right.

The Expander 500 had so much gain and compression that a common
mod was to deactivate one of it's gain stages. In other words,
a common mod on the Expander 500 was to make it less radical
than it was to begin with.

> www.cbmods.com
> tr...@cbmods.com
> tr...@aol.com
> tr...@midsouth.net
>
> THOSE WHO CAN, DO
> THOSE WHO CAN'T.....SEEK THOSE WHO CAN ! ! !
> JUST CALL ME BUBBA ! ! ! !

--

[StAnGWaReZ]

Been a while since we heard ya man.........

>the only damn mic i ever saw that ALSO needed to be "peaked" as you would a
>radio......strange mic but they work well when done right.

>www.cbmods.com
>tr...@cbmods.com
>tr...@aol.com
>tr...@midsouth.net
>
>
>THOSE WHO CAN, DO
>THOSE WHO CAN'T.....SEEK THOSE WHO CAN ! ! !
>JUST CALL ME BUBBA ! ! ! !

Ryan
replys can be sent to rp...@hotmail.com

Legal Warning: Anyone sending me unsolicited/commercial/junk/spam e-mail
WILL be charged a US$500 proof-reading fee. Do NOT send unsolicited
advertisements and do NOT add my e-mail address to a list.

[fazz...@gmail.com]

On Saturday, 1 May 1999 08:00:00 UTC+1, Bill Eitner wrote:

> Don't worry about "smoking" the rigs. Modern CBs don't
> use mechanical relays that can be damaged by grounding
> the relay coil low side.
>
> Unless you're running old SBEs you have nothing to worry
> about.
>
> E-mail me for specifics: kd6...@earthlink.net

> --
> -------------------------------------------------------------------
> -=[Bill Eitner]=-
>
> Link to AM Tutorial and rec.radio.cb FAQs:
> http://home.earthlink.net/~kd6tas/
> -------------------------------------------------------------------

Doubtful anyone still around here since last post 1999, here goes anyway.

I have a MK2 Expander 500 mic with lock, it doesn't transmit loud enough, I believe there is a capacitor replacement that resolves the issue, example of one fitted 2.2uf 50volts, anyone got any help.

80's I changed a capacitor which did the job, unfortunately after so many years unable to recall which one or its value.