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Re: Low freq DDS VFO any ideas / for sale etc ?

Von: David Chapman (dave@minda.co.uk) [Profil]
Datum: 13.05.2009 09:09
Message-ID: <sV0l$8BcInCKFw3L@chassis.demon.co.uk>
Newsgroup: uk.radio.amateur
In article
<eafd2d34-6eb4-4b82-84ed-84682dddadce@r34g2000vbi.googlegroups.com>,
Graham <g0nbd@hotmail.com> writes
>
>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


Hi Graham,

I've built the DDS RF Generator that was described in Elektor 10/2003.
It covers 50Hz to over 70MHz and has an LCD display and keyboard entry
of frequency, modulation and output level.

It is a very useful device since it produces CW, AM, NBFM or WBFM. I
bought the PCBs directly from Elektor Reader Services, and the ICs are
not difficult to find either as samples or by buying them from one of
the usual distributors.

Let me know if you need any more information.

73 - Dave  G3NGK.

--
David C.Chapman - (dcchapman@minda.co.uk)
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