[Lowfer] Fw: Re: 600MRG> LF converter, 10 meter radio, hear 600 meters

[Andy - KU4XR]

> --- On Fri, 1/1/10, Fred Temple <ftemple at windstream.net> wrote:
> 
> > There is a good possibility that the converter might
> > even work with a 14MHz crystal on its second harmonic.  
> > Ask for the 14MHz crystal and give it a try.
> > 
> > 
> > 
> > 73,
> > 
> > Fred
> > 
> 
> 
> Fred and All:
> 
> I hadn't thought of that, thanks for your input Fred. That
> might be worth a try. Even if the harmonic is not quite strong
> enough; I'm sure a Buffer/Amplifier could be added to raise the
> gain,  but probably won't be necessary.  That will also cut
> down on the PPM drift issue mentioned in one of the earlier 
> posts. This is starting to look more like a do-able idea without 
> having to shell out lots of dough.  Of course the mobile antenna 
> for respectable 600 meter reception will then become the next 
> challenge.
> 
> Thanks guys for all the input;  73 to you all ::: 
> 
> 
> 
> Andy - KU4XR - EM75xr - Friendsville, TN.
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> 
> --- On Fri, 1/1/10, Fred Temple <ftemple at windstream.net>
> wrote:
> 
> >  
> > Andy,
> > 
> > 
> > 
> > I am pretty sure that the converter will work with a
> 28MHz
> > crystal and 10 meter receiver.   It will tune
> > "right side up".  That is 495 to 510kHz will
> > be received at 28.495 to 28.510MHz.  You should wind
> L1
> > and L2 with only 7 turns.  This will raise the cut
> off
> > frequency to about 570kHz.  With the 8 turns, the
> cut
> > off is just above 300kHz.   There is a good 
> > possibility that the converter might even work with a
> 14MHz
> > crystal on its second harmonic.  Ask for the 14MHz
> > crystal and give it a try.
> > 
> > 
> > 
> > 73,
> > 
> > Fred
> > 
> 
> 
> 
>       
> 
> 
> 
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