Rik,
Yes, I believe that would work. However I couldn't find a cost
effective 50MHz OCXO, TCXO etc AND my dds developed problems with the
optical encoder so I decided to get a used HP 3325A synthesizer which
included a built in ovenized oscillator for less money than a 50MHz
TCXO which needed to be added to the dds.
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Wed, May 13, 2009 at 9:59 AM, Rik Strobbe
<[email protected]> wrote:
> Warren,
>
> I guess this problem can be solved by removing the onboard xtal and
> injecting a signal from a stable frequency source.
>
> 73, Rik ON7YD - OR7T
>
>
> At 15:29 13/05/2009, you wrote:
>>
>> Graham, Gerhard,
>>
>> This is EXACTLY the dds that I used and observed considerable
>> temperature drift when operating QRSS 60 on 137 kHz.
>>
>> --
>> 73 Warren K2ORS
>> WD2XGJ
>> WD2XSH/23
>> WE2XEB/2
>> WE2XGR/1
>>
>>
>>
>> On Tue, May 12, 2009 at 5:46 PM, Beckmann, Gerhard
>> <[email protected]> wrote:
>> > Hello Graham,
>> >
>> >
>> >
>> > the DDS-Oscillator under this link may partial meet your requirements …
>> >
>> >
>> >
>> > http://www.box73.de/catalog/pdf/FA0407_694-695.pdf?osCsid=983aae56f383b
>> >
>> >
>> >
>> > 73 de Gerhard / DK6NI
>> >
>> >
>> >
>> > =================================
>> >
>> >
>> >
>> >
>> >
>> > ________________________________
>> >
>> > Von: [email protected]
>> > [mailto:[email protected]] Im Auftrag von Graham
>> > Gesendet: Dienstag, 12. Mai 2009 23:25
>> > An: [email protected]
>> > Betreff: LF: Low freq DDS VFO any ideas / for sale etc ?
>> >
>> >
>> >
>> >
>> >
>> > Looking for a low frequency , 100k > 30 Mhz ish dds vfo, possibly a kit
>> > ,
>> >
>> > better a part completed kit would be better ...second hand working
>> >
>> > even better !
>> >
>> >
>> >
>> > Ideal would be a box with a frequency display and a key pad to
>> >
>> > enter the frequency , preferable to a pc addressed device
>> >
>> >
>> >
>> > Couple of volts sine wave out , nothing fancy , simple master
>> >
>> > oscillator for tx
>> >
>> >
>> >
>> > Any ideas or links (any for sale ?)
>> >
>> >
>> >
>> > Tnx- Graham .
>
>
>
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