That's correct. The older rigs were designed for Hi-Z mics. Also, the
540 may not provide the DC voltage necessary for an electret mic. You
may need to put a battery inside the mic. The Ten Tec desk mic has
provision for an internal battery. The older Ten Tec hand mics also had
a space for a 9V battery inside, but the current one does not. Current
Ten Tec rigs provide about 4V on pin 4 of the mic. jack. My Corsair has
7.7 V on pin 4.
73,
Bob WB2VUF
w8au@sssnet.com wrote:
At 10:51 AM 3/29/05, you wrote:
I ordered a hand mike from Ten-Tec and got on SSB last night for the
first time since buying the rig. I get on 80 meters and can barely be heard.
If your new mike is one of their electret types, (lo-Z) you need to try a
Hi-Z type such as the D-104 you mentioned. Better match to the audio input
circuit and consequently more audio.
It may be as simple as this...
w8au
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