[Yaesu] FT857D Problem ? update

[Harold Mandel]

Dear Ed,

One item that comes to mind is audio drive. That starts at the microphone.
If the microphone element is worn or defective it might not be producing
the voltage your radio needs to power the speech circuits.

Another item is the microphone's impedance. What impedance does
your radio's manual specify as optimum?  Then, again, what impedance is
your microphone?

I wanted to use the Shore 562b noise-cancelling dispatch mike, but the
impedance was 150 ohms and I needed to put a small far in the mike base.

Does your mike take a battery cell to energize it?

Not knowing any of these issues I recommend them to you.

Hal Mandel
W4HBM

-----Original Message-----
From: yaesu-bounces at contesting.com [mailto:yaesu-bounces at contesting.com] On
Behalf Of Edward Soriano
Sent: Monday, June 12, 2006 11:41 AM
To: yaesu at contesting.com
Subject: [Yaesu] FT857D Problem ? update

Have not wired my keyer yet so cannot tx on cw at the moment. It was
transmitting full scale though on FM. So I guess there is no problem.
   
  My only concern is when I talk normally over the mic(SSB) the rig's power
meter cannot reach its full scale (100w mark) unless you shout or whistle.
   
  Unlike my FT847. On phone the meter dances up to the end of the scale with
ease.
   
  I wonder if it is the same for all FT857Ds.
   
  FB Brit, I will try your menu setting tomorrow morning and let you know my
findings.
   
  Thanks guys for the immediate replies.
   
  73 de Ed
   
  Edward Soriano MD
  4F1OZ also W3DOC
   
   

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