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Good mic for Ubitx and Bitx40

Mike
 

Group,

 I just wanted to let everyone know of a decent mic to use for either the Bitx40 or Ubitx.  I use a General Electric Phoenix microphone part number 19B801398P3. This Microphone is a dynamic element WITH and internal preamp! This mic drives the BITX family nicely without screaming into the mic.

I hope this helps someone!

73's

Mike WA3O

Mike
 

I forgot to mention how to wire it up...

RED = PTT
White = Mic
Black and Shield = GND

That is it!

Mike WA3O

balrog68@...
 

Does this work without any alterations to the board? 

_Dave_ K0MBT
 

I would add that I get a lot of good signal reports using the stock electret mic element.

Paul Dobosz
 

Almost all of the land mobile (Motorola & Harris/GE/Ericsson/MaCom) are dynamic mics that have an internal preamp.  I've had an excellent experience using them in applications that were designed for Electret mics.  They are plentiful and relatively inexpensive in both NOS and used condition on the usual online sites  and are built extremely solidly..  The mobile mics tend to be quite heavy with most having a large piece of heavy steel inside for no other reason than to give them "heft".  I generally remove the weight as I wire the mic up for the radio I'm using it on.

73 - Paul - K8PD

iz oos
 

I believe the stock element is fine. I have tried other electrets elements and all delivered less output. I did change I believe R63 to have higher output. Some suggested to use very sensitive elements (-24db/pa). Mouser and others have them. However upon a suggestion here in this forum I opted using a dynamic element and a Plessey SL6270C, which is not just a preamplifier, it is a compressor. So it delivers about 90mv whatever you shout or you whisper. Average power drastically increased. I have a mil manpack, which I love (my first solid state transceiver) that exactly use this type of Plessey Vogad compressor. My point is that with QRPs a compressor, not a preamplifier or equalizer, is what is really needed.


Il 21/gen/2019 13:53, "Paul Dobosz" <pjdobosz@...> ha scritto:
Almost all of the land mobile (Motorola & Harris/GE/Ericsson/MaCom) are dynamic mics that have an internal preamp.  I've had an excellent experience using them in applications that were designed for Electret mics.  They are plentiful and relatively inexpensive in both NOS and used condition on the usual online sites  and are built extremely solidly..  The mobile mics tend to be quite heavy with most having a large piece of heavy steel inside for no other reason than to give them "heft".  I generally remove the weight as I wire the mic up for the radio I'm using it on.

73 - Paul - K8PD

twowindsbear@...
 

Check  this out!

https://smile.amazon.com/Neewer-Professional-Broadcasting-Microphone-Adjustable/dp/B00XOXRTX6/ref=sr_1_fkmr0_3?ie=UTF8&qid=1548087643&sr=8-3-fkmr0&keywords=microphone++19B801398P3

I have no clue how well this microphone would work for the uBITX & such, but for <$30.00 it SURE looks impressive!

Daimon Tilley <daimontilley@...>
 

I use one with my Yaesu FT891 and it seems fine. Not tried it with the ubitx though.


On 21 Jan 2019, at 16:30, twowindsbear via Groups.Io <twowindsbear@...> wrote:

Check  this out!

https://smile.amazon.com/Neewer-Professional-Broadcasting-Microphone-Adjustable/dp/B00XOXRTX6/ref=sr_1_fkmr0_3?ie=UTF8&qid=1548087643&sr=8-3-fkmr0&keywords=microphone++19B801398P3

I have no clue how well this microphone would work for the uBITX & such, but for <$30.00 it SURE looks impressive!

Denis
 

I have had good audio reports using my Icom 7300 mic with the BITX40.

Denis, WB8SKP

On 1/21/2019 10:45 AM, Daimon Tilley wrote:
I use one with my Yaesu FT891 and it seems fine. Not tried it with the ubitx though.


On 21 Jan 2019, at 16:30, twowindsbear via Groups.Io <twowindsbear@...> wrote:

Check  this out!

https://smile.amazon.com/Neewer-Professional-Broadcasting-Microphone-Adjustable/dp/B00XOXRTX6/ref=sr_1_fkmr0_3?ie=UTF8&qid=1548087643&sr=8-3-fkmr0&keywords=microphone++19B801398P3

I have no clue how well this microphone would work for the uBITX & such, but for <$30.00 it SURE looks impressive!