I would like to wire an ASTATIC 10-DA Mic to my TS-440S
The Mic has 2 cond. plus the shield. Do I wire the Shield to Pin # 8 or Pin # 7 on the mic plug. Which pins do I wire the white and red wires from the mic too ? Pin #1 and Pins #7 or 8?
Pin 7 and 8 are the same ground potential so you can connect one side of the mic element to either. Pin 1 is for the other side of the element. On my TS-430 which is the same I clamp the shield to the backshell of the connector. You are then going to have to come up with a mic switch which will be between pin 2 and ground. AJ8L.
It should be very easy to find with an ohmmeter. Connect one meter lead to the shield and the other lead to one wire. If it shows infinite resistance press the switch and the meter should read less than one ohm. If there is no change with pressing the switch then you have the mic element wire. Use a good ohm meter so you don't put a bunch of current into the mic element.
For Astatic mics, usual color alignment:
White - Mic audio
Shield - Mic Ground
Blue - Ground (PTT)
Red - Transmit (PTT)
Black - Receive (PTT)
Yellow is N/C or goes to shield
Quote[/b] ]So if I am reading this right, the White lead will go to pin# 1, the Shield will go to pin# 7 or 8, and the Red wire will go to pin#2 on the mic. plug that goes into the Kenwood TS-440S.
Should be a piece of cake
Do you just have just the 10DA "head" or do you have the entire microphone with the desk stand and PTT bar
The Astatic heads for their desk microphones usually have a 3 conductor plug - that plugs into a "G" or other Astatic stand.
I sounds like you MAY have a "G" stand with the 10DA on top?
I have had my TS440s for about 6 years and never bothered looking up the pins on the mic connector.
It is totally different than my TS520 and all those tiny pins look like they would be a big pain to solder to.
The guy I bought it from supplied a hand held mic and it seems to work ok but I don't work much fone anyway.
73.....JD, FISTS #3853,cc 455,SKCC # 1395,tribune #12,
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The correct mic for the TS-440 ( and most solid -state rigs ) is a LOW impedance (500-500 ohm) mic; the TS-520 uses a HIGH impedance (50k ohm) mic. The 10-DA or crystal D-104 #will work fine un-altered for the TS-520, but probably won't have enough "audio" for the TS-440 without a pre-amp. If your 10-DA is mounted on a stand WITH pre-amp you should be good to go.