AT-200 is the
company's matching unit for the TS-820 Transceiver. It is quite
straight forward in design and matches various coaxial fed antennas
satisfactory. The Antenna that I use for HF (see below) is the End
Fed Half Wave (EFHW) for 40m with extension for 80m, built by HyEndFed
Company. In fact, for the 'classic' bands I
normally use it on position THROUGH, except for the low and high ends
of the 80 meter band. Also, for the FM part of 10 meters (29.000 till
29.700) I tend to use the tuner in the position MATCHING as well.
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 appears functioning properly for the 60 meter band and for 30 meters, 17 meters and 12 meters, when I have the EFHW Antenna attached. This is basically half wave for 40 meters, with a coil and some 3,5 meters of wire (so in total 23,5 meters).
forward SWR meter
has always been between the Transceivers and the Antenna Tuner,
AT-200 has it's own meter. But you need two needles for best
HP-500 should be fine
up to 200 MHz, but here in the old city of Haarlem, I only use it for
HF. In fact, there is no SWR meter in my VHF/UHF antenna line. The
V2000 matches (almost) perfectly. The weak part of the SWR meter is the
of which the reflected power part shows intermittent operation
sometimes. I should replace the part, but that is a challenge!
V2. This is a real
positive addition to the Shack. Developement goes fast for such parts.
If you read
this, there might be another Vx available. The NanoVNA V2 provides a
wide variety of applications. I use it (in fact) only for antenna
measurements on HF and VHF/UHF. Sorry.....
great. In the field where I use it (as stated on the left), it does not
really need a coupling to a laptop. As I use it for measuring
antenna's, it is easy to select the frequency band for measurement,
calibrate the unit (once more) and measure the effects of changeing an
antenna. A laptop is convenient when you want to add (much) more
measuring points. See the Antenna section below for measurements on
antennas (pdf files)
is a very useful
instrument in the shack, when designing antennas with coils. This
LC-meter has the big advantage that it can measure very small values
C and L with a precision of <1%. Specifications: L meter: 1 nH till
100mH, C meter: .010pF 1uF. The meter was designed by Cor, PA0CHN
in April 2000. It came as a kit with all relevant parts supplied. It
has a nulling function to rule out wire capacitance or inductance
before starting the measurements. I have the design and partslist
available for those whore are interested. Send an email to [my
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, for the simple reason that I forget
the exact formula for coil design, and this website offers a great
help. Whether you want to use coil length or the number of windings:
the used method is very intuitive. The web gave 5.95 uH and the meter
is the tuner that
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 input of this tuner. For that setup, and the fact that I don't
operate with PA's, it is an ideal tuner
Antenna section, where I
describe that ideal antenna. This Tuner has only one, and then a small
meter. Therefore the Zetagi SWR meter is the supporting companion in
the shack. I also own an automatic MFJ-993B Automatic Antenna Tuner,
but that one is in use by Cor PA2MCE (next item)
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.
It is now in use
by PA2MCE, for the use of this 2x 20m (18m30) dipole on other
is happy with the part
an example of
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. Bob has
always supported withing 24 hours on any questions that I had....
I prefer it over CHIRP. I use CHIRP for the other equipment
|On his website
Bob Freeth has
announced that he has updated the on line versions of all help files
for reasons that you have to check on his website yourself. He also
announced that his programming
software is now free of charge, but suggests that
donate to any charity in stead.
The other programming software is CHIRP. Well supported and continously updated, but less intuitive (my opinion). It is FOC as well. Many supporting sites can help you using it for programming. Check my Library page for articles on programming and my experience with the various cables and plugs.
1978!) 2mtr FM trx
ICOM IC-04E 70cm FM porto
Bosch KF-161 digX (surplus/reworked) 2mtrs FM trx
Teletron T813 (surplus/reworked) 2 mtr FM trx
CONDOR SE550, 70cm FM transceiver (PA4DEN EPROM)
|All of these listed sets still have a place in my shack
or in the cellar. My intention is to use the once in a while, which is
certainly possible for local qso's on 2 meters. But all of them have no
subaudio for repeaters and their use remains very limited.
But I cannot throw it away.