[Heathkit] DX-35 Grid Drive

[Ed - K9EW]

On Tue, Mar 14, 2017 at 6:02 PM, Ed - K9EW <k9ew57 at gmail.com> wrote:

> I realize this reply is seven years late, but I just started working on a
> DX-35 and it had the same problem... too much grid drive on 80m.  I bridged
> the 4700 ohm 1w resistor (that's wired across the 80m driver coil) with a
> 1500 ohm 1w resistor, and that limited my drive to around 3.0 - 3.5 mA.
> That value may have to be determined by trial and error - that's how I did
> it.  The same solution should work on 40m, but I didn't need to do it.  I'm
> replying to your original post so that someone else may benefit from this
> in the future.  It's never too late for a boatanchor tip.
>
> 73,
> ed - k9ew
>
> On Sun, Nov 28, 2010 at 8:05 AM, Bill Stewart <cwopr at embarqmail.com>
> wrote:
>
>>
>>
>> During the last few days I fired up a DX-35 from the fix-it shelf and it
>> worked ok from the start. However, I did find a few loose solder joints so
>> went over it with the iron. I added a fuse and pulled the modulator tubes
>> to reduce the load on the pwr xfmr. So far the only problem I see is too
>> high grid drive on 80/40 mtrs. The min. I can get is around 3.5ma. and w/o
>> much adjustment. Twenty mtr grid drive is adjustable from 1.5 to 5 ma. Any
>> idea how I can reduce the grid drive on 80/40? It should be around
>> 2.5ma. for the good health of the 6146.
>>
>> Thanks...73 de Bill K4JYS
>> ______________________________________________________________
>> Heathkit mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/heathkit
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Heathkit at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
>