You align back to front. IE: Oscillator to Antenna or for Vermonters its
right to left. I'll let you figure it out if the rcvr is on edge or dead bug
!<G>!
Dont push your luck Todd, Im slowly relearning all this stuff and will
probably make some goofs along the way. Maybe we can all learn together. But
Im going to be real slow having to restuff caps and figure out preserving
all the hand numbered resistors, all but 2 are original.
I had to buy a FB7-XA just to get a 5897 PS. I might do that first as it has
the same style resistors and I may be able to salvage some for the HRO.
Carl
KM1H
----- Original Message -----
From: "Todd, KA1KAQ" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
<[email protected]>
Sent: Tuesday, November 27, 2007 5:17 PM
Subject: Re: [AMRadio] HRO-50
On Nov 27, 2007 4:53 PM, <[EMAIL PROTECTED]> wrote:
----- Original Message -----
Subject: Re: [AMRadio] HRO-50
Date: Tue, November 27, 2007 15:48
From: "jeremy-ca" <[EMAIL PROTECTED]>
> We got plenty of all era HRO's in for service and a jig was not used.
> Once
> you got the knack it was easy. The holes in the chassis are there for a
> reason.
>
Hi Carl!
Are you referring to the holes in the TOP of the chassis for the high-end
adjustments, or holes in tha back of the coil rack, under chassis, for
the
low-end adjustments? Neither of my HROs (a 2.5V heater 1935 model, & and
HR0-7R) have the latter, so the coil racks need to be removed for the
bottom-end-of-range adjustments. I do understand certain models had them,
but mine don't :>(
I'd like to learn more about this process at some point. I know you
have some experience with the older HROs Larry, and Carl worked for
National for a number of years, so he probably spits pinwheel dials. I
figure between the two of you, I should be able to figure it out.
The rig in question is a '47 HRO C utilizing the HRO 5RA1 receiver.
I'm trying to put together a set of the 'bright faced' coils, or maybe
just find the aluminum plates for the coils that came with the set
(currently a mishmash of types).
The thing was pretty numb initially. Tweaking a few of the coils
ever-so-slightly helped, but there's a specific order to follow and I
know I didn't do this (having no clue what the order is).
All things being equal (good tubes, proper IF alignment), what is the
best way to align the coils?
~ Todd, KA1KAQ
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