[Hammarlund] Re: [Boatanchors] Resistance values of power supply chokes.

[Revcom Electronics]

Ken...
This was on the thread a couple years ago...

L21 choke, .097A  270ohms, 16H
L22 choke, .055A  900ohms, 35H

Info from Sam's No. -8-
Sounds like your's very close to spec.

You may have a shorted audio output causing
high current draw, or??. Is that  noise affected
by the volume control?

Rod
K0EQH

----- Original Message -----
From: "Ken Hickman" <n5cm at rtconline.com>
To: <hammarlund at mailman.qth.net>; <boatanchors at theporch.com>;
<boatanchors at mailman.qth.net>
Sent: Tuesday, February 13, 2007 10:43 AM
Subject: [Boatanchors] Resistance values of power supply chokes.


> Hi Gang,
>
> Does anyone know what the restance is of L21 and L22 power supply chokes
of
> the
> Hammarlund HQ-129-X? The schematic and parts list doesn't give the Henrys
> nor
> the resistances.
> I've had both  chokes rewound and one is 15 Henrys and measures 190 ohms
on
> a
> Eico Model 221 VTVM.
> The other one is 35 Henrys and measures 1000 ohms.
> My Sencore "Z" meters only measures to 10 Henrys so no luck there in
> confirming
> whether the chokes are still good.
>
> Problem is a loud hum or horn sound and the three 10 Mfd. 450V condensers
> all
> come thru with flying colors on both the "Z" meter and the N.R.I. R/C
> Tester.
>
> My next effort will be to substitute another audio output transformer (for
> the
> original in the rcvr). I have the one I salvaged from my first 129-X which
I
> parted
> out a couple of years ago.
>
> I am still open to any ideas or suggestions. I am too stubborn to give up!
> Take care,
>
> Ken  N5CM
>
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