[Boatanchors] [Milsurplus] 455 Khz BFO Coil

[William Cromwell]

Hi,

A 455 kc IF can can be made to serve as a "BFO coil". I did that once 
upon a time. IF amplifiers will certainly oscillate if you don't use 
care about feedback. Some manufacturers used an oscillating IF amplifier 
for just that purpose. They can also be used in e regenerative amplifier 
set below the point of oscillation as a Q-multiplier.

Best wishes for your project and a Happy New Year.

73,

Bill  KU8H

bark less - wag more

On 12/29/22 13:08, n2lxm at juno.com wrote:
> I should have been a little clearer. This is a Home Brew. I took an old
> AA5 chassis, striped out the converter and DC supply sections. Rewired
> for 6 volt tubes. Want to add a BFO to it. It will be hooked up to a
> FFRD-7 8 - 16 MHz tuning unit. So any BFO coil that I can squeeze in will
> work.
>
>
>                                                      Jeff N2LXM
>                                            Amateur Radio Operator
>                                                        American
>                                                          Patriot
>                                       Proud Father of Two US Marines
>
>
> On Thu, 29 Dec 2022 09:56:46 -0800 Ken <kgordon2006 at frontier.com> writes:
> Which receiver?
>
>
> Ken W7EKB
>
>
>
>
>
>
> Sent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone
>
>
>
>
> -------- Original message --------
> From: n2lxm at juno.com
> Date: 12/29/22 09:16 (GMT-08:00)
> To: milsurplus at mailman.qth.net
> Cc: boatanchors at mailman.qth.net
> Subject: [Milsurplus] 455 Khz BFO Coil
>
>
> Good Afternoon All, I am looking for a 455 Khz BFO coil for a receiver
> project. Anyone have one then can part with ?.,
>
>
>                                                      Jeff N2LXM
>                                            Amateur Radio Operator
>                                                        American
>                                                          Patriot
>                                       Proud Father of Two US Marines
>
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