[HBR] Iron powdered slugs

[Peter Bertini]

If I was going to do this, I'd be looking for an old car radio that
had the inductive tuning
mechanisms.

Pete


On Sun, Sep 28, 2008 at 4:07 PM, Peter Bertini
<radioconnection at gmail.com> wrote:
> Does he say if the core is ferrite or powdered iron?  I suspect for that range
> it would have been a ferrite slug??
>
> Pete
>
> On Sun, Sep 28, 2008 at 3:00 PM,  <jlandrigan at pol.net> wrote:
>> I am trying to construct a permeability tuned oscillator from the July 1964
>> QST. The plan calls for an 8 mm diameter by 19 mm long iron powdered slug
>> with a 4 mm hole through it. The author says he used the slug from a surplus
>> 455 KHz IF transmformer.
>> Does anyone have any experience with PTO construction and does anyone have a
>> source for this slug?
>> This is the basis for both a transmitter VFO and a heterodyne mixer for a
>> HBR styled receiver.
>> John KA4RXP
>> ************************************
>> Visit the HBR Receiver Web Site with over 100 pictures of receivers and
>> construction notes...... via http://www.qsl.net/k5bcq/
>> there is also a mirror (faster response)at http://k5bcq.edebris.com/
>>
>>
>> Retrieve reflector archived data via
>> http://mailman.qth.net/mailman/listinfo/hbr
>>
>>
>>
>