No problem, Jim: Its not that I cant make the Electret CM-500 work on the Orions at NQ4I (I have the bias box), its just that the mic sounds really bad on that rig, no matter what I try to do with the rig's EQ, or what little EQ capability is in the rig (They are Orion 1's). These Orions are really bassy. I have diddled with the carrier shift and transmit bandpass and have gotten the rigs to sound pretty good, but there is still a lot of difference between the radios (there are 8 of them), even with the same exact settings.
I have been "volunteered" as the audio guy up there. Of all the mics we have tried (and we have tried a lot of them), These Orion 1's seems to really like the DX4 capsule. Recently, Rick has begun installing W2IHY EQ Pus units, and these seem to make the Orions sound quite good. The IHY compressor is leagues ahead of the TenTec internal processor. This along with some transmit bandwidth contouring has really "unmuddied" the stations. There are EQ Plus units on 20 run and 40 run now, with 80 run coming soon, then 15 run. I will keep that circuit in mind for other uses, maybe with an Icom 7700. -lu-w4lt K3 # 3192 Date: Fri, 19 Nov 2010 11:15:02 -0800 From: Jim Brown <[email protected]> Subject: Re: [Elecraft] Yamaha CM500 To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 11/19/2010 5:48 AM, Luis V. Romero wrote: > when I travel to NQ4I, where my CM500 does not work! Lu -- thanks for the detailed rundown on the Koss unit. I don't know what radios are at NQ4I, but I'm headed to PJ4 for CQWWCW, where FT1000MPs are used. Before and after the contest, I may want to work SSB, so I made a simple connector adapter for my CM500 mic (8-pin mic plug, one resistor, short length of coax, to female TRS 1/8-in jack). Last night, I checked it out with the MP that's still in my closet as a backup rig. I had to turn down the mic gain a LOT, but K6XX tells me that it sounds fine. The resistor goes from the 8VDC pin on the mic connector to the MIC hot pin on the connector. I think I used 4.7K or 6.8K. Any value in that range is fine. 73, Jim K9YC No virus found in this outgoing message Checked by PC Tools AntiVirus (6.1.0.25 - 6.14880). http://www.pctools.com/free-antivirus/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
