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Homer March 15th 06 03:06 PM
TX Bias setting for TRC-457 type radios
 
I have the service manual but it is in storage, would like to know the
mA setting for VR15 and VR16.

thanks,

Homer

Scott in Baltimore March 15th 06 08:07 PM
TX Bias setting for TRC-457 type radios
 
Homer wrote:
I have the service manual but it is in storage, would like to know the
mA setting for VR15 and VR16.

100ma?

Homer March 15th 06 08:23 PM
TX Bias setting for TRC-457 type radios
 
No, I know they are both different. One is higher.

Homer

Scott in Baltimore March 15th 06 08:32 PM
TX Bias setting for TRC-457 type radios
 
Homer wrote:
No, I know they are both different. One is higher.

Homer


A TRC-465 is 65mA for driver and 70mA for final.

You can always measure the voltage to it. You need .67 volts
to overcome the diode's junction on the base.

Homer March 16th 06 11:57 AM
TX Bias setting for TRC-457 type radios
 
Thanks for the replies, I went and got my book from storage.
FYI:
VR15 = 40ma
VR16 = 15ma.

Homer


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