[DSP-10] Transverters with DSP-10

[Don Jackson]

Hi,

I'm the one who kicked off this discussion with my questions about a 
transverter (1296 MHz) for use with my DSP-10.  Thanks for all the responses, 
both on-list and direct email.  To sum up, the DSP-10 should have enough 
drive for the DB6NT MKU13G2 transverter, especially if the transverter is 
modified slightly at build time.

I have a GPS disciplined 10 MHz. source which I will use with the DSP-10 and 
also plan to use the CT1DMK "reflock" with a 96 MHz. xtal oscillator, so 
hopefully stability (and phase noise) will not be too much of a problem for 
me.  I am definitely interested in ALL modes for EME.

Thanks again for the input and discussion ... and hope to work some of you 
eventually on the 23 cm band even though it will be a while yet before my 
station is QRV.

73,
Don AE5K
EM36pc - Northern Arkansas Ozarks

On Friday 29 October 2004 04:24 pm, P.W. Straks wrote:
> Hello Dave and all the other DSP-10 users,
>
> For the db6nt Transverters (and others as well) there is now the 40°
> precision crystal heater.
> It regulates at about 0.1 Degree on 40 Degrees C.
> Not quite a OCXO but I think pretty close.
>
> You can put it easily on an existing Xtal and there are also 40 Degrees C
> Xtal's available, but you can first try out if it works good enough before
> ordering a 40 C Xtal.
> Perhaps the 1296 MHz Transverter is then stable enough to do PSK31 and
> other digital modes.
>
> http://www.kuhne-electronic.de/english/news.htm
>
> For 10 GHz you can build your own 106.5 MHz OCXO, but there is also a good
> one available at (also with other frequencies):
>
> http://www.id-elektronik.de/
>
> This OCXO is (on request) also available with a external input for tuning
> it and using this input when locking it to a stable source, like GPS 1pps
> or Rubidium 10 MHz
>
> BTW: For 2m, 70cm and 23cm, I am using the IC-910-H with a external OCXO
> (30.2 MHz) locked to GPS or most of the times to 10 MHz Rubidium using the
> controller design of Shera Brooks.
>
> http://www.rt66.com/~shera/index_fs.htm
>
> On 23 cm the result here is quite good now, within 0.1 Hz.
> I will use this OCXO in future also for the 13 cm db6nt Transverter as
> Local Oscillator:
> 30.2 x 4 = 120.8 MHz and, this will give, with the transverter multiplying
> it 18 times to 2174.400 MHz, on IF 145.800 MHz then 2320.200 MHz (European
> Band).
>
> This 30.2 MHz OCXO I ordered from HC-Electronics( OCXO-6):
>
> http://www.hcelectronics.cz/Aver/index_A.htm
>
> 73,
>
> Paul, pa0ocd
>
> On 29-10-2004 17:51:10, Discussion of DSP-10 2-meter transceiver
>
> (dsp-10 at mailman.qth.net) wrote:
> > I used to use the DB6NT xverter for 1296 with my dsp10 (which was locked
> > to GPS). It was OK for ssb/cw/fm but was not stable enough for WSJT
> > modes,
> >
> > i had to build an external oscillator for it. The same is true of my
> > db6nt
> > 10g xverters, an experience shared with many in europe who use
> > external
> > oscillators such as the G8ACE one http://www.microwaves.mcmail.com/
> >
> > Dave
> >
> > ww2r
> >
> > > looking over available transverters.  I believe I would like to use the
> > > DB6NT MKU 13-G2 unit.
> > >
> > > Several questions:
> > > 1. See no specs on how much 144 MHz drive is required for the
> > > transverter.
> > > Will the DSP-10 be adequate or would I need an amplifier stage?
> > > 2. Has anyone used this transverter with the DSP-10 and could give me
> > > your results, hints, etc.?
> > > 3. Any suggestion for a better transverter (within a limited budget)?
> > > and slightly off this subject, but eventually it will come...
> > >
> > > 4. Ideas for a higher power amp between transverter and dish antenna