[R-390] John Leary circuit info

[Les Locklear]

All three of the Leary receivers I have owned have the 6EJ7 as the snd mixer 
tube. One had a flexible shaft so you could fine tune the cathode bias when 
on a weak station on the higher second conversion frequencies.

Les Locklear
Gulfport, Ms.
DX'ing Since '57
http://www.hammarlund.info/

----- Original Message ----- 
From: "Perry Sandeen" <sandeenpa at yahoo.com>
To: <r-390 at mailman.qth.net>
Sent: Saturday, March 15, 2008 1:43 AM
Subject: [R-390] John Leary circuit info


> GM List,
>
> For the SP 600 anthology I'm attempting to get all the John Leary 
> information possible.  Les
> Locklear sent me copies of what he had.
>
> One page appeared to be a copy from QST however there was no reference 
> footer.  Figure 1 showed a
> 6EH7 frame grid tube as an RF amplifier.  Figure 2 shows a 6EJ7 as a 
> mixer.  John's notes that he
> used this in at least one of his later receivers.  A reference from the 
> web indicates that came
> from QST 6/66 p.41 and QST 7/66 p.49.
>
> I would appreciate it if any on the list could send me copies of those 
> articles or if my
> references are wrong, the correct article(s).
>
> As john's SP 600's displayed  spectacular performance I'm trying to obtain 
> all of the technical
> information that I can so others can reproduce his results.  Of course 
> this is so we have another
> receiver to compare with the R-390A.  (Saving disclaimer to avoid being 
> labeled OT.)
>
> An other data one would have would be appreciated.
>
> Regards,
>
> Perrier
>
>
>
> 
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