[Boatanchors] Help needed on yet another WWV receiver

[J. Forster]

A mix of sub- and super- heterodyne?

That's an odd one!

Thanks,

-John

================


> 4490 - 2500 = 1990 kHz IF
> 6990 - 5000 = 1990 kHz IF
> 10000 -8010 = 1990 kHz IF
> 15000 - 13010 = 1990 kHz IF
> 20000 - (9005 X 2) = 1990 kHz IF
> 25000 - (11505 X 2) = 1990 kHz IF
>
> John
>
> --------------------------------------------------
> From: "Dave Merrill" <r390a.urr at gmail.com>
> Sent: Tuesday, July 13, 2010 5:53 PM
> To: <boatanchors at mailman.qth.net>
> Subject: Re: [Boatanchors] Help needed on yet another WWV receiver
>
>> Ron,
>>
>> Here are the crystals in my SR7H:
>>
>> 2.5 MHz   4490 KHz
>> 5.0 MHz   6990 KHz
>> 10 MHz    8010 KHz
>> 15 MHz  13010 KHz
>> 20 MHz    9005 KHz
>> 25 MHz  11505 KHz
>>
>> Checked these with a frequency counter and they are all correctly
>> marked.
>>
>> /dave
>> N9ZC
>>
>> BTW, there is an Instruction Manual for the SR-7 on eBay: 250390292760
>> Seller does not state if it includes a schematic and the price seems a
>> little steep.
>>
>>
>> On Tue, Jul 13, 2010 at 3:07 PM,  <bonddaleena at aol.com> wrote:
>>>
>>>
>>> Hi. I recently acquired a Specific Products SR-7 WWV receiver. This is
>>> the common, tube type of radio.
>>> Problem is, there is only one crystal in the radio. I bought it as 'non
>>> working', and that's ok , 'cause it was very cheap.
>>> It is in pretty good condition. I would like to obtain:
>>> a. an Owner's Manual (not likely)
>>> b. a schematic
>>> c. a list of the frequency of the xtals inside, so I can purchase
>>> replacements
>>>
>>> SP sold a LOT of these and surely some kind person out there could help
>>> me out. By the way,I will GLADLY pay for the info above!
>>>
>>> thanks!!!
>>>
>>> ron
>>> N4UE
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>
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