[Boatanchors] Drake 2B RX Question

Garey Barrell k4oah at mindspring.com
Fri Nov 13 23:30:18 EST 2009


Lee -

Start by unplugging and replugging the crystal in the 40M slot.  If 
still no Preselector peak, try substituting a 6EA8 for the 6U8.  This 
will often "fix" a bad crystal.

Keep in mind that the 2-B is essentially an 80M receiver with crystal 
controlled converters in front of it.  You can check with a Hi-Z meter 
on the test point near V2.  Note the reading with the Bandswitch on 80M, 
and then switch to 40.  The voltage should go negative a volt or two if 
the oscillator is running.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B, C-Line&  TR-4/C Service Supplement CDs
<www.k4oah.com>


Lee Buller wrote:
> Hello,
>
> I just got a Drake 2B off of EBay and have it fired up on my workbench.  First time I am fooling around with a Drake.  The questions I have is that there is no signals on 40 meters.  I get nice signals on 80 meters....both CW and SSB.  40 meters does not even peak up on the pre-selector.  On 20, I do get a peak in noise, but there are not signals up there.  I get no peak on 15 or 10 meters.  Seems to me the Xtal oscillator might not be going or I do not know how to operate the RX.
>
> The unit is real stable from the get go.  Been listening to a net on 75 meters and there has been no drift at all.
>
> The Xtals are a little confusing so any enlightenment one might have would be helpful
>
> It does have the standard 3 Xtals in 40 20 and the middle 10 slot.  It does have a Xtal in the "E" slot, but I have not figure out what that one is yet.  Late in the day.
>
> Could I have a bum 40 meter Xtal?  If so, where do I get another?  Or, can I unseat it and seat it again?  Clean the contacts of the band switch?
>
> Lee
>
>
> In our day and age it seems that Common Sense is in short supply.  If you don't have any Common Sense - get some Common Sense and use it.  If you can't find any Common Sense, ask for help from somebody who has some Common Sense.  Is Common Sense divine?
>
> Common Sense is the image of the Creator expressing revealed truth in my mind. -  J. Wolf
>
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