[Boatanchors] Replacing Meter Shunt Johnson Valiant

[Bry Carling]

Would anybody like to have another valiant? I have one for sale. I would really rather swap it for a good Johnson Ranger.

Best regards - Bry Carling, AF4K





On Jul 17, 2018, at 8:24 PM, David Harmon <k6xyz at sbcglobal.net<mailto:k6xyz at sbcglobal.net>> wrote:

I replaced all the shunts in my Valiant.
They are not resistors...they are lengths of nichrome wire.
You can't solder very well to nichrome so it depends upon the builder
wrapping the wire around the lugs.
You can get good precision resistors from Mouser.


73

David Harmon
K6XYZ
Sperry, OK


-----Original Message-----
From: boatanchors-bounces at mailman.qth.net<mailto:boatanchors-bounces at mailman.qth.net>
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Mark K3MSB
Sent: Tuesday, July 17, 2018 7:18 PM
To: Greg Roecker <n4osj.radio at gmail.com<mailto:n4osj.radio at gmail.com>>
Cc: BoatAnchors QTH <Boatanchors at mailman.qth.net<mailto:Boatanchors at mailman.qth.net>>
Subject: Re: [Boatanchors] Replacing Meter Shunt Johnson Valiant

Gregg -- Isn't R57 for the Grid current?   Personally, I wouldn't worry
about 5.1 ohms.   A  modern 5 ohm 5% resistor will probably be much more
accurate than a 5.1 ohm 5% resistor that came with the unit.

I didn't have to replace R57 on my Valiant, but I probably would have used a
standard metal oxide resistor.

BTW, check your plate and modulator current shunts and especially the
grounds associated with them.

73 Mark K3MSB


On Tue, Jul 17, 2018 at 3:36 PM, Greg Roecker <n4osj.radio at gmail.com<mailto:n4osj.radio at gmail.com>> wrote:

I need to replace the meter shunt in the plate circuit [R57}.  It is a
5.1 ohm, 3% resistor.  Anyone have any recommendations on what type of
resistor to replace it with?  Metal film?  Resistors have come a long
way since this thing was built.  Way too many choices.

Thanks!

73,

Greg/n4osj
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