- Yaesu FTDX10 HF/50MHz 100W Hybrid
- Alinco DM-430T Switching 12v 30A
- Wolf River Coil SOTA Special (SOTA is
Summits On The Air) Packable Vertical Antenna
with Buddipole extensions (2
ea. 11" and one 32" - 54" total) and longer
(84")whip antenna similar to this.
- Alpha Antenna JPole Jr. 34' End fed 'sloper'
feed end at 30' AGL (Above Ground Level)
sloping to 10' AGL fed at the North end with the
wire sloping to the South, so East/West should be
strongest signals, you would think, but read
on! Connected through NI4L
HF Choke Line Isolator (CM choke) to reduce RFI.
- SDR Play RSP1a (Software: SDR Uno)
- BTech UV-25X2 VHF/UHF FM
- Baofeng UV-5R VHF/UHF FM HT w/
Nagoya NA-771 VHF/UHF Antenna
- MFJ 1708B-SDRS SDR Receiver TR
- MFJ 1701 Antenna Switch
- AWow Mini PC - Radio Control
with two Sceptre 20" LED Monitors
DXLabs, WSJT-x, JTAlert,
Spectrum Analyzer, NanoVNA Saver, Wireshark,
OpenOffice, Google Earth Pro
- Mac Mini - My office workhorse;
produces the secure (LetsEncrypt)
Internet presence for this web site, (Apache HTTP Server) publishes
several MySQL databases, handles all
storage, video, html editing, email, etc.
- Retired: Acer
Notebook - configured primarily for Application
Generation with AppGini for MySQL databases.
Toshiba Satellite Notebook - configured primarily
for Radio Control with DxLabs, WSJT, and other
radio control software.
- Fluke 77 DVM (circa 1970, my
- NANO VNA Network Vector
- Looking for an inexpensive 100
Mhz dual trace storage oscilloscope.
- NOTE: The RSP1a SDR makes a
fine spectrum analyzer to sample transmitted
signal. My current antenna is selected by a
switch box, then routed through the MFJ 1708B SDR TR
Switch to the RSP1a and the Yeasu FT10Dx
transceiver. When in transmit there is just
enough RF energy still present to provide the RSP1a
with a very usable sample. Good way to check
for modulation and spurious emission (my first
harmonic is less than 30 db down - GOOD!)
Tuning my audio card volume and WSJT-X's power
control shows that for FT8 mode I can run the
selected audio card at full volume, and the program
power level at 100% without distortion and that I do
not have to apply any wave shaping to produce a
clean transmit signal.
- 20210730 I captured this
screen shot from the Spectrum Analyzer app running
on the RSP1a. Conditions: WSJT-x FT8 Tune
mode with transmit frequency set to 1000 Hz, Power
100%, into Palomar 55 antenna, sampled by RSP1a
inline via MFJ 1708B. First harmonic is
-33db 4th harmonic is -50.5db. The signal is
averaged over 20 sweeps.
- Skimmer (not until it works
with my SDR or another inexpensive one).
Skimmer is expensive - but it could be worth it
since there are few reverse beacons near me.
But not until I have a proven antenna system ...
- Best radio control, DX, Contesting software, but
it needs a native CW decoder!
- WSJT - The best way to 'do'
- JTAlert - Adds serious
functionality to WSJTx for things like 'worked
before' and 'Calling You'.
- NOTE: As of July 2021 I have
configured WSJTx and JTAlert to cooperate and
control FT8, logging (both local and LoTW) and
spotting. Working on how to automatically and
timely update LotW and QRZ logs.
- CWGet - Works off the
sound card, so it can work with DXLabs
- CHIRP - Allows programming
HT's to the same channel (frequency) etc. even if
they are different model numbers from different
manufacturers. But its a bit 'clunky' - I may have a
look at creating the same functionality using some
other tools and database(s).
VNA analysis of my
antennas - or - Learning how to use VNA Windows
JPole Jr Install and Test
Using a 30' flag pole to 'fly' a wire antenna and stay
under the radar (maybe).
As well as how well it works, and how much sensitivity
it has to installation direction.
Comparison to Wolf SOTA vertical
and other antennas.
- Relative ERP map by
Transact (or something) the DXLabs and WSJTx MS Access
log databases on JWIN into MySQL tables on JMAC so I
can archive, and manipulate, display etc. outside of
the applications. See if AppGini can ingest
'em? Otherwise use Open Office Db to enumerate
- Pending ground rod
- Presently using 3rd wire
ground which may be a significant fraction of
wavelength because of the way my electrical
distribution is laid out.
- Document RFI using RSP1a
and Windows screen shots to compare before and
after grounding effects.
- Install 8' ground rod -
leave enough to attach a high lift jack to
extract, near the NW corner of the shack.
- Pull #12 bare CU to the
operator position and distribute connections to
radio equipment by replacing the current 3rd
- Pull #12 bare CU to each
flag pole and VHF mast, drill, tap and lug to
base of pole.
- Next routine maintenance
bond across each pole joint.
- Lightning Ground
- Signal Ground
- EMI Ground and Shielding
(I've got a great large (1490Khz/1KW) AM ground
wave transmitter 500 yards to my East).
Radio Continuity of Operation
- New battery for UPS
- Power OP strip from UPS
(JMac & display, JWin & displays, ext
drives, HF, VHF & UHF radios, HT charger.
- New automotive/deep cycle
battery for transmitter(s)
- Solar charger.
- Switch radio over from
commercial to battery. Temporary immediate
phone, CW only.
- Switch entire shack to
generator (change 30A source fm commercial to
genset), Temporary all modes.