Phil's defense (Was Re: [R-390] Modded my R-390A...)

[Philip Atchley]

> Then -- an RCA jack?  What's this, some kind of Victrola?

> At least he could have had the common decency to be thematically
> consistent and installed a BNC.
> "Thematically"???????????????  Don't try to one up us Perfessor!!

The RCA Jack required a smaller hole.  Besides the Heathkit HD-11 had an RCA
plug on it's connecting cable.  I wouldn't want to desecrate the Heathkit by
doing any unauthorized mods to it 8^)

> There's more.  What's the purpose of the abovementioned abomination?  To
> connect a Q-multiplier, right?  The physical act of the connection is
> reversible -- just a single coax connection (albeit via that unauthorized
> orifice).  However, it does, in no uncertain terms, indicate the intent
> to operate an R-390A at a Q other than the official, sanctioned Q.  The
> Collins gurus in their wisdom equipped the R-390A with a wide range of
> selectivity settings. They did not see fit to add a Q-multiplier.

Well, the Collins folks with all their wisdon DID NOT provide a "Notch
function" on this otherwise fine receiver.  Besides, this way I can get
selectivity between 4 and 8 kHz, whatever is optimum for the station I'm
listening to.  (8kc is often to wide and 4 too narrow)

> Well, if that Q-Multiplier is placed wrong, there will be inquiries as
> the availabilty of failed
mechanical
filters...............bzzzzzzzzzzzzzztttttttttttt...oooooooppppppsss!!!

Nope.  It's in the RF deck well separated from the Mechanical filters both
physically AND elctrically.  AND I added a .033uF coupling Cap between the
plate of the 3rd mixer and the jack for DC isolation.  Something Heath
didn't suggest, but I figured a shorted cable would take my IF transformer
out.  THEN I'd be looking for another T-208 and I had trouble enough finding
ONE for my homebrewed Longwave receiver project!

> A low end of 500 kc.  Phil is operating his
> R-390A at odds with the official nomenclature plate and, yes folks,
> technically he is therefore "out of bounds".

I just looked at the nomenclature plate on this '67 EAC and the only
frequency that is shown on it is 48-62 cycles.  Am I missing something
here???  And NO, it is not one of those phoney plates that you buy through
ER 8^)

Runnin' and duckin' in Central California (where've I heard that before).
Phil  KO6BB