[K3CAL] IC-251

[James Tetlow]

Chuck,

As I recall the radio came with an HM-7 , 600ohm, dynamic mic with built in preamplifier. Desk mic SM-5 with original connector wiring was used with this radio. I think an HM-8 hand microphone will also work. I will look through some boxes, may have an unmodified SM-5; not too sure about the early hand microphones .........give me a few days. If you have a manual great, if not I think you can download a "copy" from icom global.
http://www.icom.co.jp/world/




 

Sent from my iPad,
Best Regards,
Jim Tetlow

> On May 16, 2015, at 13:45, Chuck Shefflette - AA3CS <aa3cs at me.com> wrote:
> 
> I’m currently working on another IC-251 for one of the club members which is exhibiting low transmitted audio levels and I believe it has either an issue with the microphone input or the microphone(s) being used aren’t providing a high enough level signal.  I would like to verify it using an original microphone from the IC-251. 
> 
> As I recall, an Icom IC-251 was sold at the silent auction during the Christmas party two years ago (2013) and it included the original mic. If you have it and would be willing to lend me the mic so I can do some testing, please contact me directly.
> 
> Thanks and 73,
> 
> Chuck - AA3CS
> 
> -----
> “A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.” -- Freeman Dyson
> 
> ______________________________________________________________
> K3CAL mailing list
> Home: http://mailman.qth.net/mailman/listinfo/k3cal
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:K3CAL at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/k3cal/attachments/20150516/5c16d065/attachment-0001.html>