[Johnson] Valiant Chirp suggestions

[Adrian Ellison]

Hello Art,

Do you get chirp on all bands?

I found that mine was bad on 40m but the others were okay.  40m is a band we 
use a lot for local comms in South Africa, so I adjusted the mechanical 
linkage to use the 160m vfo coil for 40.
It's as clean as a whistle if you do that, there's still plenty of drive for 
full power.
All this is in reference to the Ranger, but I think the Valiant is the same in 
this regard.
Chirp isn't objectional, a tx that does that is still perfectly readable, but 
I can understand you wanting to fix it.

73 and best regards

Adrian / ZS1TTZ
On Sunday 14 September 2008 05:36:50 Artmouton wrote:
> I am finally finding time to work on the CW chirp in my Valiant.
> Other than that it works fine with lot of power output.  Also looks great
> with my 75A-4.
>
> I have some older emails on the subject but thought I would ask the group
> for advice.
>
> I plan on trying it with a crystal on CW to see if that would narrow the
> problem down to the VFO area?  Is this worth the trouble?
>
> I was then going to do a full clean of the tube sockets, switch contacts
> and generally check connections, grounds, etc.
>
> I will recheck all tubes - it still has the Mercury Vapor rectifiers - I
> will probably keep them as I love the glow, especially on CW.
>
> After that is it then going to be work on the VFO and the famous 18k
> resistor in the VFO can.  Suggestions have been to mount a 22k 5 w resistor
> outside of the box - not sure how that will work but it will be on the list
> to do.
>
> The old email also talks about grounding the shaft of the plate tuning
> capacitor because of the RF on it, especially on 40 meters.
> One suggestion by W8UT was to use motor brushes on the arm with a ground
> connection - it even had a photo
> http://www.boatanchors.org//Valiantpix/100_0388.jpg
>
> So, what else is out there.  If I am going to take it down what other
> suggestions.
>
> Tnx & 73, Art K5FNQ
>
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