| I appreciate the input, but I already own CM-500(s). 
Mike Alexander 
amsctalx@comcast.net 
----- Original Message -----
From: "Rodney" <w3krq@dejazzd.com> 
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com> 
Sent: Friday, December 9, 2011 4:11:29 PM 
Subject: Re: [TenTec] Yamaha CM-500 boomset use with Orion II? ATTN K9YC 
IF YOU WANT A GOOD HEADSET CONTACT W4WST HE MAKES A HEADSET TO FIT YOUR 
RADIO JUST GET ONE AND PLUG IT IN SOUNDS GREAT JUST LISTEN TO HIM ON 3938 
AT 7PM OR 730PM 
-----Original Message----- 
From: amsctalx@comcast.net 
Sent: Friday, December 09, 2011 3:32 PM 
To: k9yc@arrl.net ; Discussion of Ten-Tec Equipment 
Subject: Re: [TenTec] Yamaha CM-500 boomset use with Orion II? ATTN K9YC 
I built a simple interface, with a 10db divider (pad), didn't work. Did some 
more searching, turns out the CM-500 is an electret (despite many sites 
listing it as dynamic). Ah-ha! Wired bias to the ring, now I have a tiny 
(and tinny) output with a lot of hiss. Should I try biasing to the tip and 
or should I try a dropping resistor? 
Thanks, 
Mike Alexander - N8MSA 
amsctalx@comcast.net 
----- Original Message ----- 
From: "Jim Brown" <k9yc@audiosystemsgroup.com> 
To: tentec@contesting.com 
Sent: Tuesday, December 6, 2011 1:50:59 PM 
Subject: Re: [TenTec] Yamaha CM-500 boomset use with Orion II? 
On 12/6/2011 10:47 AM, Dan Thompson wrote: 
> but will 
> require some padding or you'll need to turn the Orion's mic gain way down 
> since its output is much higher than most other mics. 
That's also true with the FT-1000MP. I made up an adapter for a DX 
trip, and tested it before leaving. I WAS able to turn the mic gain down 
low enough to avoid distortion. Dunno about the Orion, but I'd guess 
the answer is the same. 
73, Jim K9YC 
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