[HBR] AA2YV Lollygags, HBR Proj Languishes

[Peter Bertini]

Oh whoops!  I should have checked before posting, and I see the 13C is
the only design that used an active stage at the 1600kc IF frequency.
You need two IFTs for 1600kc.  So, the idea about checking for a
defunct tube CB with salvageable 1650 IFTs is a good plan!  The Heath
HR-10 and a few other ham rigs used IFs in that region (1680kc) and if
a scrapper could be found the IFTs could be tuned down with padding
caps.

I'm not trying to steal the thread, but why did Ted feel that an IFA
was needed in that one HBR example? I'd would have thought it would
screw up the gain distribution, why so much gain, and why risk
overdriving the second mixer?

Pete


On Sat, Sep 27, 2008 at 7:09 PM, Peter Bertini
<radioconnection at gmail.com> wrote:
> Howdy Bill
>
> Why not copy the homebrew IF transformers used in the HBR-16?  They
> should work as
> well as any of the commercial units.
>
> Pete
>
>
> On Tue, Sep 23, 2008 at 1:17 PM, William Hopkins
> <whopkin4 at zimbra.naz.edu> wrote:
>> Hello Fellow HBR'ers,
>>
>> Must confess right here: Several years ago I purchased several parts from
>> one of the HBR gurus.  It would be for the HBR 16.  In the meantime have
>> decided I should probably build the 13C.  Sooo, I finally took out all the
>> parts I have and placed them on a basement table as a sort of impetus to
>> begin the job in earnest.
>>
>> The recent traffic on the reflector, (re: IF transformers) has set my head
>> to thinking.  I don't have the 1600 IF's, so will have to scrounge or
>> build.
>>
>> MY QUESTION: Has anyone recently and successfully built these?  (I might
>> have to tune them to 1610, based on what I already have on the table.)
>> There is a British fellow in Sweden who has a website up about building the
>> IF transformers.  Does anyone have experience in this area?
>>
>> My chassis is rather large (from Hammond, I think: ca. 17 x 9 x 4), so I can
>> pack in the goodies.
>>
>> ciao
>> Bill Hopkins AA2YV
>> Rochester NY
>>
>>
>>
>> ************************************
>> 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
>>
>>
>>
>