PA0SNY |
Tool
picture (icon) |
Description |
Remarks |
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The Kenwood
AT-200 is the matching unit for the TS-820 Transceiver. It is quite
straight forward in design and matches various coaxial fed antennas
satisfactory. I use the End
Fed Half Wave (EFHW) for 40m with extension for 80m. For the 'classic'
bands I
normally use it on position THROUGH, except for the low ends
of the 80 meter band. I made some pictures of the interior and rear side. AT-200 top view - AT-200 side view - AT-200 rear view |
Although it
has the six
'classic' HF bands only, it tunes the EFHW properly for the 60
meter band and for 30 meters and 17 meters. As my EFHW is tuned for 80m in the higher 100 kHz, I need the AT-200 for the lower 200 kHz, as the IC-7300 ATU cannot cope withe that, |
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This straight
forward SWR meter
has always been between the Transceivers and the Antenna Tuner,
eventhough the
AT-200 has it's own meter. But I want to see two needles for best
observations. |
The Zetagi
HP-500 should be fine
up to 200 MHz. The weak part of the SWR meter is the
potentiometer,
of which the reflected power part shows intermittent operation
sometimes. |
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The NanoVNA V2. This is a real positive addition to the Shack. Developement goes fast for such parts. The NanoVNA V2 provides a wide variety of applications. I use it (in fact) mostly for antenna measurements on VHF/UHF. | I don't use it
in combination with a laptop. See the Antenna section on another page
for measurements on
antennas (pdf files) |
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This LC-meter
is a very useful
instrument in the shack, when designing coils. It has the big advantage
that it can measure very small values
for
C and L with a precision of <1%. Specifications: L meter: 1 nH - 100mH, C meter: .010pF - 1uF. The meter was designed by Cor, PA0CHN. |
In the
specific example a coil
was measured of about 20 wdgs of 1.2 mm copper on a 19mm pvc tube. I
use the rimstar.org
website for the coil design. Whether you want to use coil length or the
number of windings:
the used program is very intuitive. The web gave 5.95 µH
and the meter
indicated 5.98 |
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The MFJ-941D
has been used during my "Vijfhuizen" years (I lived in this small
village till 2014). I matched the Open Dipole (2x 13,5m) on the
balanced output. For that setup, and the fact that I don't
operate with PA's, it suffices. |
This Tuner has
only one small
meter. Therefore the Zetagi SWR meter is the supporting companion in
the shack. |
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The MFJ-993B
IntelliTuner is a
handy device for automatic tuning of a transmission line / antenna
system. I have used it in combination with the FT-897D and a random
piece of wire. |
When in due
time a (2x13m) dipole shall replace the EFHW, this tuner will be used
again. |
an example of one cable |
Programming
sets and porto's:
this is making life easier than doing it manually, and in some cases,
you cannot even do it manually. For my YAESU equipment I use the
software that Bob Freeth G4HFQ
has developed. Since I own the FT-8900 I was looking for strong and
intuitive software. I purchased FTBasisMMO (for the FT-897 and more
rigs), FTB60 for the FT-60D and FTB8900 for the FT-8900. I prefer it over CHIRP. I use CHIRP for the other equipment |
Bob Freeth had
announced that he has updated the on line versions of all help files.
He also
announced that his programming
software is now free of charge. Check my Library page for articles on programming and my experience with the various cables and plugs. |