| Author |
Message |
    
Dale
Senior Member
Username: Dale
Post Number: 2226
Registered: 12-2002
| | Posted on Tuesday, September 01, 2015 - 7:20 pm: | 
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so i was looking at base mikes and a couple of mobile mikes. one thing i noticed is some are
eletric condensor
ceramic cartridge
crystal cartridge
there maybe more but i see these the most.im just curious what the differences are ..if any. any advantage of another??
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Tech237
Moderator
Username: Tech237
Post Number: 1836
Registered: 4-2004
| | Posted on Friday, September 04, 2015 - 7:12 pm: |
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Dale - it all depends on the radio really. Radios that are designed to use an condenser mic have a small voltage on the mic wire other wise the mic won't work properly.
crystal mics, have a very high impedance and again, won;t work on a radio designed for a lower Independence mic (well at least not well).
Cannot recall about ceramic mic, so I"ll hope some one lese will answer on those.
At one stage there was even a carbon mic that basically worked like a voice controlled variable resistor. As you spoke the resistance of the carbon granules varied, which in turn changed the current flowing in the circuit. Like the condenser mic, this also needed a device supplied voltage. Most common place to find this mic used to be old rotary dial phones.
In short use the type of mic stated in the radios user manual.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Dale
Senior Member
Username: Dale
Post Number: 2230
Registered: 12-2002
| | Posted on Saturday, September 05, 2015 - 5:58 am: |
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thank you. thats something ive wondered about when looking to buy a new mic
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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