Good morning dear ARDF fellows,
South Africa’s SARL News report the ILLW takes place over the weekend of 18 and 19 August and, according to the entry list, Namibia has two lighthouses registered and South Africa has thirteen lighthouses registered for the event. Continue reading
Operators Jose EA1ACP, Gen EA5EL, Francisco EA7FTR and David EB7DX will be active with the special callsign 5E5A during four different periods. Continue reading
On Sunday the 5th of August 2018, Mark Turner EI3KD managed to work D4Z on the Cape Verde Islands off the coast of of Africa on 144 MHz, a distance of some 4163 kms. This remarkable contact, made on CW, was a new record for tropo in IARU Region 1. The previous record of 4130 kms was set back in July of 2015. Continue reading
A Weekend Antenna Project
Joe N2CX had come up with an idea for a portable antenna for NPOTA use that covered the 40/30/20 m bands. This pairs nicely with the LNR MTR3B as well.
The QRP Guys worked with Joe to create a kit and a wind winder element to it.
Basically its a 1/4 wave on 20m with inductance being switched in as needed for the other 2 bands.
As per the QRP Guys manual https://qrpguys.com/wp-content/uploads/2018/05/tri-band_vertical_assy_042918.pdf I went ahead and an hour later I was ready for testing.
SWR on 20m is below 1.3, and the other bands are under 2 to 1 depending on the frequency.
A great piece of kit for the antenna box
The fiberglass rod is the chinese 7m fish pole that was $12 US
The Buddipole or (Buddistick) in a vertical orientation is simply a quarter-wave ground plane antenna. It is typically mounted on a tripod and mast about eight to twelve -feet off the ground. The elevated counterpoise runs at an angle to a counterpoise stick (driveway markers from the hardware store). The reason for the elevation of the counterpoise is to get the feed point impedance closer to 50 ohms and reduce the ground losses by a counterpoise laid on the ground. The trick then is to lengthen or shorten the counterpoise to get to resonance.
Don’t complicate it with 32 radials as I typically use one or two with great results.
With the resurgence of interest in the Magic Band, please print and refer to when listening.
Listening is not the right approach, call out on the assigned channels looking for activity or monitor beacons to check for activity.
DX Maps is also a useful tool
50.090 CW Calling Frequency
50.06 QRP CW Calling Frequency
50.7 RTTY Calling Frequency
50.100 to 50.130 DX Window (USB)
50.110 DX Calling Frequency (USB)
50.125 USA National SSB Simplex Frequency (USB)
50.1-50.6 Weak Signal, AM
50.260 is the WSJT Meteor Scatter
50.270 FSK Meteor Scatter
50.300 FM Simplex Calling Frequency (West Coast)
50.385 USB PSK31
50.4 National AM Simplex Frequency
50.885 QRP SSB Calling Freq
51.910 FM Internet Linking
52.525 National FM Simplex Calling Frequency
6m Dipole too simple to make “even for appliance operators”
or buy one from Arrow https://www.radioworld.ca/arr-gp52
The upcoming Baker Island DXpedition is sure to be a sought after contact, especially if propagation doesn’t play fair.