Narrow the resolution bandwidth and slow the sweep to remain within the
units calibration requirements. Seems you are simply seeing the noise
of the spectrum analyzer or network analyzer being many dBs below the
reference line. If the unit can tolerate it, increase the RF input
level to kee
50 -470 versions are very broad banded but the VHF
versions seem to be more critical pobably due to the harness construction more
then the dipole length.
Thanks for the input.
Doug N3DAB
=
--- In Repeater-Builder@yahoogroup
Good day Doug. I have a DB dual band antenna similar to what you are
describing, it has 4 folded dipoles for two meters, and 8 folded dipoles
for 440. These are two on each side of the pipe for two meters and four
on each side of the pipe for 440. The diameter of the pipe is slightly
smaller
Good day folks, I have come across some LDF7-50A heliax with
commercially installed DIN connectors on each end. These are in 250 to
300 feet coils and in good condition. Most have the grounding straps
already mounted. We also have the DIN to half inch pigtails available
and will be include
For heliax at 'make offer' prices, check the equipment for sale listings
on the GNARC.org web page. This is good quality and some have
connectors already mounted. Shipping will be a problem Good
luck. It is good stuff especially for VHF and UHF
73
Curt W1FSM
Chris Curtis wrote:
>
Something else to consider is what we experienced on our two and 440
repeaters. Our 440 has a stationmaster type of antenna into the
duplexer into a preamp then into the Micor repeater. Most of the
electrical storms we had caused me to go to the site to replace the
preamp transistor. After m
I don't know if you have the capability to do the following, but I
successfully tested a 4 bay Sinclair two meter antenna that had been
damaged to verify all elements were indeed connected internally and
functioning. I positioned the antenna horizontally on my deck (greater
than 10 feet above
Hello to the list. A very good and super inexpensive Sinad meter can be
an old Heathkit audio distortion meter. Any distortion meter will work,
but the old Heathkit units are around and are super cheap. Simply
connect across the loudspeaker and with a strong signal into the radio
to be teste
Our MSR-2000 had the CW ID in the extreme left slot. I don't remember
if it was identified on the label or backplane. Hope this helps...
Curt W1FSM
Ben wrote:
Thanks Mike, I downloaded all the info. I still could not find
where the CW ID card plugs in to the backplane. Possibly the w
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