[HBR] HBR16 with 85Khz IF Transf.

[Lorne Barber]

Tony, in my opinion the 85 khz IF's would work. One way would be to change 
the second mixer injection freq  to give a 85 khz difference rather than the 
100 khz as used on the usual HBR.

Another way would be to change the L O freq to change the first IF freq to 
provide an 85 khz difference rather than the usual 100 khz. This could 
result in tracking problems etc, meaning a lot of "cut and try".

I have never done a HBR as you suggest, but I am in the process of doing a 
HB65 using these fine command set transformers.
Good luck
7 3
Lorne
ve7box


----- Original Message ----- 
From: "Tony" <cybrlnk at yahoo.com>
To: <hbr at mailman.qth.net>
Sent: Wednesday, December 10, 2008 8:50 PM
Subject: [HBR] HBR16 with 85Khz IF Transf.


>
> Was looking at building an HBR16 and have some nice 85KHZ IF transformers.
> wondering if using them without modification on 85 Khz would pose any 
> unexpected problems?
> These are kind of nice in that you can vary the coupling by adjusting a 
> rod that sticks up thru the top of the can, they also have air variable 
> trimmers.
>
> Thanks,
>
> Tony WV3Z
>
>
>
> ************************************
> 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
>
>