[time-nuts] HP-3586B SSB L.O. Mods...

paul swed paulswedb at gmail.com
Mon Mar 21 17:44:08 EDT 2011


It can actually be calculated and it is in Berts tables.
But last night I used spectrum lab and and could see the difference between
usb worse case.5 Hz and LSB .3Hz. It was very stable no drifting at all
while tuned to wwvb. But spectrum lab was not really optimized to give me
better detail. Sub Hz res. Need to figure out how you would do that actually
and maybe you simply can't.
Regards
Paul
WB8TSL

On Mon, Mar 21, 2011 at 5:29 PM, Burt I. Weiner <biwa at att.net> wrote:

> Bert,
>
> This looks very interesting.  Have you been able to determine the actual
> error between the receiver's "tuned to" frequency and the 1850.000.00 Hz
> audio tone error out of the receivers audio for upper and lower SSB?  This
> could make a good group project kit.
>
> Burt, K6OQK
>
>
>  Date: Mon, 21 Mar 2011 10:11:04 -0700 (PDT)
>> From: "Bert, VE2ZAZ" <ve2zaz at yahoo.ca>
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] HP 3586A/B/C entirely referenced to 10MHz: A
>>        solution
>> Message-ID: <258386.19056.qm at web112008.mail.gq1.yahoo.com>
>> Content-Type: text/plain; charset=us-ascii
>>
>> Hello Everyone,
>>
>> I have spent the last few weeks modifying the HP 3586 Selective Level
>> Meter. The
>> intent was to modify the unit and reference the SSB product detector stage
>> to
>> the internal reference. This would make the entire SLM locked to the 10MHz
>> reference, whether internal or externally fed.
>>
>> I have completed the modification with satisfactory results. I use a
>> DDS-Based
>> Function Generator 16-pin IC and a small 8-pin PIC micro.  For more
>> detail,
>> visit my website at http://ve2zaz.net/HP3586_AD5962/HP3586_AD5962.htm .
>>
>> This has been a very good exercise from a DDS perspective and I have
>> learned a
>> lot on the topic. I would be interested in hearing from those who proceed
>> with
>> the mod.
>>
>> Thanks,
>>
>> Bert, VE2ZAZ
>>
>
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California  U.S.A.
> biwa at att.net
> www.biwa.cc
> K6OQK
>
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