Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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DW -
Cool! Grounding is critical in several areas of the TR-7, so that would
certainly help.
The problem with C320 is probably a result of high ESR, or AC
impedance. An electrolytic can measure good on a capacitance meter and
still have a high ESR.
Carrier suppression should be better than 60 dB below full output. You
say yours is 45 dB down, but you don't say down from what!?!? :-)
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>
DW Harms wrote:
Hi Garey and a few others,
Many thanks for your help sorting this out. I exchanged C320 on the
TX-exciter board and made sure all the grounding is in proper order. The
carrier is still audible but a lot weaker then when I started! I think
C320
had the main effect, however if I measure it it reacts as a normal
electrolith...
The carriersuppression is now in the order of 45 dB down and I think
this is
as good as I can get it.
Thanks again, this list houses some REAL hams :)
73, Dick PA2DW
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