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 11 
 on: Today at 11:23:02 AM 
Started by WZ8J - Last post by N1BCG
Thanks for the correction, Clark.  It seems my valiant, and manual, are an older version.  My apologies for the mis-information.

No, no, no... it's not a correction. We're both right and it depends on the version of Valiant. I struggled with some Valiant issues for a month because the original builder followed the construction steps exactly. As it turned out, the engineers at E.F.J. had a change of heart (several times) and a friend's factory built unit featured some important updates.

The only reason I suggested the pots version is from the title of the post, and I should clarify that the resistor number references suggest the earlier schematic version and not just a component number change. Technically, R22 became R62, a potentiometer for RF Bias only and R61 and R63 were added as a separate Mod Bias circuit.

Here's an example of "We should start doing it like this from now on...":

 12 
 on: Today at 11:16:22 AM 
Started by Steve - K4HX - Last post by Steve - K4HX
.

 13 
 on: Today at 10:00:09 AM 
Started by WZ8J - Last post by w8khk
R21 (Modulator Bias) and R22 (RF Bias) are both 5k Ohm, 25 Watt wirewound potentiometers.

In some manuals, R21 and R22 are listed as R61 and R62 but the values are the same.

Thanks for the correction, Clark.  It seems my valiant, and manual, are an older version.  My apologies for the mis-information.

 14 
 on: Today at 09:52:52 AM 
Started by WZ8J - Last post by WA5VGO
Try swapping the two outer leads. That should move the wiper to a different place on the element.

 15 
 on: Today at 09:06:38 AM 
Started by KD6VXI - Last post by Steve - K4HX
Yea, GFH posted a bunch of these here years ago. Funny stuff.  Grin

Good to see that they are still floating around.

 16 
 on: Today at 07:32:23 AM 
Started by WZ8J - Last post by N1BCG
R21 (Modulator Bias) and R22 (RF Bias) are both 5k Ohm, 25 Watt wirewound potentiometers.

In some manuals, R21 and R22 are listed as R61 and R62 but the values are the same.

 17 
 on: Today at 12:44:58 AM 
Started by WZ8J - Last post by w8khk
The Valiant I modulator and final RF amplifier bias settings are adjusted by taps on R22, a wirewound 5000 ohm, 25 watt resistor.  This thread will provide a link to the manual and the adjustment procedure...

http://amfone.net/Amforum/index.php?topic=42250.0

Hope this helps.  GL, OM.

 18 
 on: Yesterday at 11:25:39 PM 
Started by WZ8J - Last post by MikeKE0ZUinkcmo
Should be in the parts list section of the manual.

 19 
 on: Yesterday at 10:12:46 PM 
Started by wa2pjp - Last post by wa2pjp
I need a # 50C611 IF coil, 2015 kc for a Hallicrafters  receiver I am restoring. If anyone has one in their junk box, let me know what you would like for it.
Thanks

 20 
 on: Yesterday at 10:11:52 PM 
Started by WZ8J - Last post by WZ8J
I have a kit built Valiant I that has pots to adjust both amp bias and mod bias on the right side of the chassis. I have been having trouble setting the static mod current. The reading on the meter jumps up right at the point that it approaches 50 mils and I cannot get it to behave.
I have tried contact cleaner sprayed into the pot and working it back and forth, but that hasn't helped. I may have a replacement in my parts box.
Anyone know what the proper resistance and wattage is for this pot?

Thanks!

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