Posted by
Jim Wiley-2 on
Aug 28, 2011; 12:43pm
URL: http://elecraft.85.s1.nabble.com/XV144-tp6734563p6734601.html
David -
How high is your antenna? If your antenna is 20 feet or less above the
ground, it is well below the radio horizon for stations 100 miles away.
In fact, not allowing for various forward scatter propagation modes, an
antenna 20 feet above average terrain will "talk" about 6 miles. 100
feet = 15 miles, and for 100 miles, 5000 feet above average terrain.
Keep in mind that tropospheric scatter or other modes can extend these
distances quite a bit, and the numbers assume the distant antenna is at
zero elevation.
Obviously, if the distant antenna is elevated the required height at the
"near" end becomes less, or the range the two stations can communicate
becomes greater. This is the obvious reason that repeater sites are
often located on mountain tops. One of our local repeaters is located
on a mountain at about 4400 feet elevation, and it covers out to about
75 miles, using a 10 watt transmitter.
Absent the frequency readout problem, your transverter may be working
just fine.
- Jim, KL7CC
David Heinsohn wrote:
> Hello All
>
> I use a K2 and have XV50 and 144. The XV50 seems to be working just
> fine. However the 144 seems to have a problem. I live far enough away
> from other operators and had a poor enough antenna that I've not been
> able to find a test horse to talk to on two ssb or cw. finally made
> that happen last week. What I found was that the transverter seemed to
> be working. Receive performance is not as good as I think it should be
> (I changed out the loop antenna for an eleven element beam fix pointed
> at the metro area about 100 miles away). I need to run with the preamp
> on, rf and af gains all the way up to hear BIG stations at 100 miles in
> good conditions. And even more worrying is that, based on several
> stations reports my dial reads 12.4 khz high.
>
> From what I can see in the manual there is no alignment for frequency
> readout as such and the adjustment available from the TRN menu is only
> 10 khz.
>
> In checking the K2 against WWV it seems to be within well less than
> 100 hz.
>
> Suggestions?
>
> TNX
> de
> David
>
>
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