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Re: Carrier Null revisited


Grayson Evans
 

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Exactly. ?I haven¡¯t worked on a SSB rig that did not include a carrier null adjustment. Kind of surprised.

On Oct 30, 2017, at 1:59 PM, Allard PE1NWL <pe1nwl@...> wrote:

I guess what he means is that when he keys the PTT, he has some
rest-carrier (even when no mic is installed, so without modulating).

73 Allard PE1NWL

On Mon, October 30, 2017 17:45, Vince Vielhaber wrote:

You have carrier? ?Did you add the CW mod? ?(10K resistor)

Vince.


Just finished building out a new BITX40 board. ?Works, but there is a
LOT
of carrier when keyed (no mic installed).
I take it from previous posts that the diodes and null pot (R105) were
removed. ??Dont exist on my board.
This is inconvenient. ?How the ?heck is a builder supposed to fix
carrier
null with no null, AND no way to adjust the BFO frequency.
Did cost reduction make this board useless for adjustments?







--
??Michigan VHF Corp. ?? ??
??????????????








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