I've never operated a 940 but many radios have a transmit switch right on 
the radio.  I know the 440 does.  Short of that, you can always use vox 
until you get something else rigged up.  Lou
----- Original Message ----- 
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, August 22, 2009 9:57 PM
Subject: Re: Adding a Condenser Mic


> Michael,
>
> Turning the mic on or off won't do anything except make a nice loud pop.
> You will either need to find a PTT lead somewhere on the back of the 
> radio,
> or figure out some way to use the PTT connection from the mic connector on
> the front.  If you're serious about experimenting with other mics through 
> a
> mixer, you may want to visit www.w2ihy.com, where you'll find several 
> items
> of interest.  One of these is an interface box for connecting various
> devices to the mic input of your radio.  The box is somewhat pricey, but 
> it
> contains circuitry for isolating RF from the audio, as well as a gain
> control so you can vary the audio level from the output of your mixer. 
> The
> box also has an RCA jack which connects to the PTT lead on the mic 
> connector
> so you can key the radio without having to use the PTT button on a
> microphone.
>
> Steve
>
> ----- Original Message ----- 
> From: "Michael Ryan" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, August 22, 2009 20:24
> Subject: Adding a Condenser Mic
>
>
>> Hi all:
>>
>> I'm thinking of experimenting with a fantim powered condenser
>> microphone.
>> I'm guessing I'll need some sort of mixer such as a Barhinger 2 band
>> equed model (802) which will also supply the fantim power I'll need
>> and will allow me to match the mic's input to my TS-940SAT safely.
>> What I don't know is: How do I control the PTT action like a
>> traditional desk mic like the MC--60? Once piped through a mixure and
>> such, I'm sure the mic will activate automatically similar to if the
>> switch on the MC-60 is turned on.
>> I'm also guessing that switching the mic's power off and on, won't do
>> the trick as there is probably a short delay and there will probably a
>> noticeable pop on the other end of my DXing and Rag chewing.
>> I'm thinking some sort of interface will have to be constructed that
>> will allow the mic to be kept on but not keying the transceiver until
>> I push a button or something.
>> Hope someone can advise me on this or knows someone using a setup and
>> can forward me an email so I may contact this individual for
>> assistance.  Most likely the person at the music store where I'm going
>> to buy the mic, won't have a clew about applying these kind of mics to
>> Amateur Radio. (HI)
>>
>> 73:
>> Michael De VO1RYN
>>