| Author |
Message |
    
Kb5lpa
Intermediate Member
Username: Kb5lpa
Post Number: 183
Registered: 8-2002
| | Posted on Saturday, December 03, 2005 - 11:22 am: | 
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This is probably not a tough question but what is a good microphone for a Washington base? I would like to know in terms of stock replacement (the one with radio is sort of poor), amplified desk or hand microphone. Got a good deal on radio but as I stated microphone is a bit poor. Looking for opinions here.
73,
KB5LPA |
Dx431
Senior Member
Username: Dx431
Post Number: 1129
Registered: 2-2002
| | Posted on Saturday, December 03, 2005 - 12:02 pm: |
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The Turner mics work well. The D104's work well too, but are to sensitive. The Turner +3, SSK or the CS-1 would be my choices for the Washington. |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 1009
Registered: 7-2004
| | Posted on Saturday, December 03, 2005 - 4:48 pm: |
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When i used mine years ago i used a Turner
+ 3 Desk Mic which worked great:
Coppers has a new Compression Mic coming on
line soon...Good Luck! |
Kb5lpa
Intermediate Member
Username: Kb5lpa
Post Number: 184
Registered: 8-2002
| | Posted on Saturday, December 03, 2005 - 5:13 pm: |
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Thanks. That is a great start. Any other thoughts out there?
73,
KB5LPA |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 941
Registered: 6-2004
| | Posted on Saturday, December 03, 2005 - 6:11 pm: |
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It's a fallacy that certain microphones sound good with certain radios. Here's a great thread about the subject:
http://www.copperelectronics.com/cgi-bin/discus4/board-auth.cgi?file=/34/77285.html |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 1013
Registered: 7-2004
| | Posted on Sunday, December 04, 2005 - 12:49 am: |
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I do not agree with you Hollowpoint445!
My RCI manual states: For best results the user
should select a low-impedance dynamic type
microphone or a transistorized mic.
And i have found that to be true! You can adjust until your face turns blue, your just not going to get some mics to sound great on every radio.
So, i just can not agree that it's a fallacy.
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Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 944
Registered: 6-2004
| | Posted on Sunday, December 04, 2005 - 8:22 am: |
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Road_warrior - Nearly all current microphones fit those two criteria. The only ones that don't would be a high impedance microphone made to work with an older radio. Even then the only issues would be low frequency roll off due to the impedance mismatch or to little output.
If there was any question, because of those two criteria it's obvious that the radio has a low impedance audio circuit. Dynamic microphone elements are inherently low impedance so it'll work well with the radio. Transistorized microphones (notice it doesn't mention any particular type of element) can work with almost all radios because the amplifier buffers the element so impedance is no longer an issue for the element's performance and the only factor then is ouput level which is almost always adjustable.
The single biggest factor is how your voice interacts with the microphone in question. The difference in response from one microphone to another is far larger than the miniscule difference from the audio section of one radio to another. The audio stages of all transceivers are made to pass the frequencies above about 300Hz and below about 3000Hz. Of course there is going to be some tolerance from radio to radio, but unless a horrible mistake in component value was made, that difference is small.
If you can't get a normally functioning microphone to work on a particular radio then the only three things that could be a problem are the impedance, too little ouput, or too much output which could cause these problems:
- Oversaturation of the audio circuit where it would be driven past the point of linearity and clipping would occur.
- Overmodulation due to a disabled or improperly adjusted modulation limiter which could cause the tone of the audio to change and in extreme cases - distortion.
I own dozens of microphones of all types, and I've used them on many different radios. In my experience there is no microphone that doesn't sound at least good on any of my radios as long is it's in good working condition, the impedance is correct, and the level is good. None of my radios have a disabled limiter, and they're adjusted to 100% maximum modulation.
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