301/401 cw problem

[Mark Graalman WB8JKR]

  Hi Gareth,

  Ground the number 7 lug on RL1 and I believe your
problem will go away. Sounds like secondary
emission from the 6146's after they get hot and this
mod will correct that.

73,  Mark  WB8JKR


On Tue, 16 Apr 2002 02:47:53 -0700 Gareth Gammon <ggammon at BCGROUP.NET>
writes:
> Hello all,
>
> My 301/401 pair has developed an interesting problem. When
> operating cw, at the end of a transmission, the relay opens
> but the received signal is knocked way down and a steady
> tone is heard. This tone gradually fades away until finally
> the full receiver audio is heard. I believe a second relay
> contact opens as there is a slight click from the 401 and
> the audio is restored all at once. The longer the
> transmission, the louder the tone is initially and the
> longer it takes to subside and restore full receiver audio.
> Blocked audio can take as long as 10 seconds to be restored.
> On short transmissions, such as a cq, the pair act normally
> with full audio after key-up.
>
> The twins are set up to operate in the xceive  configuration
> with the 301 controlling the 401. The full crystal pack is
> installed in the 401. SSB operation is normal.
>
> Any ideas? It liveable, but annoying as the first part of
> the other station's transmission is lost. This is often just
> the call signs  but sometimes it's not.
>
> Thanks for the help.
>
> 73
> Gareth VE7CGG
>
> ps. The more  I use this receiver, the more I appreciate it.
> I can hear and work stations that are so far down that the s
> meter never makes it "off the peg" (if there was one).
> Thanks again Eddy Swaynar!!
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
> http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/HEATH.html

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html