[Lowfer] LF converter, 10 meter radio, hear 600 meters

[Zack Widup]

Yes, the HTX-100 can be modified by cutting a couple pins on the
microcontroller (and I think adding pull-up resistors) to cover from 26.0 to
30.0 MHz. I did this mod because I have a 903 MHz transverter crystalled for
903.0 MHz = 28.0 MHz at the IF. So I wanted to tune down to 27 MHz to cover
902 MHz.

Note from my observations: Performance is fine down to 27 MHz but drops off
rapidly below about 26.8 MHz to be practically useless at 26 MHz.
73, Zack W9SZ


On Mon, Jan 4, 2010 at 2:00 PM, Paul Daulton <k5wms at centurytel.net> wrote:

> Andy Mouser has a 28.000 mhz xtal( not overtone type) :
>
> CITIZEN CRYSTALS
> MOUSER PART NO 695-CSA309-28
> CITIZEN # CSA30928.000MABJB
>
> 28.000MHZ WITH 18PF LOAD CAP
>
> $0.83
>
> iF THAT WONT WORK FOR YOU THERE ARE PLENTY OF 27.000 MHZ XTALS. I think
> the htx-100 can be modified to 27.000 band, ch19 is 27185 , or you
> could pick up a 23 channel cb rig.
>
> Good luck, go ahead and buy it .
>
> paul
>
> Quoting Andy - KU4XR <ku4xr at yahoo.com>:
> > I would like to ask for someone to do an experiment for me.
> > Before I purchase the LF converter with a 14 MHz XTALas
> > Fred had mentioned trying, I would like to be reasonably
> > sure that the 2nd Harmonic is going to be strong enough to
> > be detected at 28 MHz.
> >
> > Will someone who has one of the converters, try listening
> > to a known signal at your converters 2nd Harmonic, and then
> > post your results as to whether you can hear the signals at
> > the 2nd Harmonic frequency ???
> >
> > I do not have another radio other than the HTX-100 to play
> > around with, and not really interested in spending the
> > money to buy a 30 meter kit receiver to try to use the
> > converter with.
> >
> > A sidebar question :::::  If I remember correctly, trying to
> > use one of the EPSON clock oscillators at HF is a No Go due
> > to Phase noise generated by the oscillator, is this correct ??
> >
> > Thanks for any help, and 73 to all :::::
> >
> >
> >
> > Andy - KU4XR - EM75xr - Friendsville, TN.
> > LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> > Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
> > http://www.myspace.com/beaconxr
> > http://webpages.charter.net/ku4xr/
> > ***   http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg
> ***
> > ****    http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg
> ****
> >
> >
> >
> >
> >
> >
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>
> Paul Daulton K5WMS
> beacon WMS 187.492 khz qrss30/slow 24/7
> Jacksonville,Ar 72076
> em34wu
>
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