[Johnson] Valiant 6146 Question

Carl km1h at jeremy.mv.com
Wed Dec 19 11:18:54 EST 2012


Ive tried all combinations and as many brands and date codes as I could find 
in a V II about a year ago out of curiosity. They all worked just fine 
160-10M.

A Valiant will be on the bench early next year and I'll try again.

Carl
KM1H


----- Original Message ----- 
From: <whitebear1122 at comcast.net>
To: <Johnson at mailman.qth.net>
Cc: <boatanchors at mailman.qth.net>
Sent: Wednesday, December 19, 2012 10:32 AM
Subject: [Johnson] Valiant 6146 Question


>
>
>
> While I've read Glen Zooks 6146 article, and fine article it is too!, I 
> wonder if anyone here has had any personal expereince with 6146 vs 6146B 
> vs 6146W mixing and matching in the PA of the Valiant. Over the weekend I 
> repaired my Valiant and ended up replacing two of the three 6146's in the 
> PA. They only blew out after I had overstressed the transmitter while 
> trying to tune up on 160m with an antenna and tuner that just wasn't going 
> to take me there, so it wasn't the transmitters fault nor the tubes fault. 
> I was my error. I've since replaced the antenna and it tunes fine on 160m 
> now. After I closed up the transmitter,I then remembered the 6146 mixing 
> and matching debate. I had not paid any attention to the 6146 flavors when 
> put in the replacements. It seems to be working nicely at least on 80m and 
> 40m. Haven't tried it on 20m yet. 150 watts output on CW. I know I have 
> 6146W's in the modulator and they work FB.
>
>
>
> I was just curious if others had actually had problems with the mixing and 
> matching 6146's in the PA.
>
>
>
> I am also looking to buy some NOS 6146s, either straight, A's, B's, or 
> W's. I need some spares now. Out of my 4 spares, two are now in the 
> Valiant, and the other two turned out to be weak. They read 45 on the TV-7 
> (where 35 is minimum), but then quickly started dropping to the 20's 
> before I let off on the button.
>
>
>
> Thanks. 73, Scott WA9WFA
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