Saturday 5 November 2016, Goorooyarroo VK1/AC-036
Early in the week I posted SOTA alerts for two 8 point SOTA peaks in the Brindabella Ranges, Devils Peak and Dingi Dingi Ridge. Early Saturday morning I was woken by the sound of strong winds gusting 45 km/h. I checked the Bureau of Meteorology forecast, yep Saturday would be a windy day with winds gusting 50 km/h at higher altitudes. The risk of trees falling across a 4WD trail or worse falling on me was enough for me to change plans and head to ‘Goorooyarroo’ on the north-east ACT/NSW border.
My plan for today is a little ambitious, I want to work a Japanese SOTA activator S2S on voice SSB. Where do you start? Well the process starts with a SOTA alert containing comments like ‘seeking S2S with Japan’ or ‘seeking S2S with JA’. The alert should be posted at least 5 days in advance, you want to give SOTA activators plenty of advanced notice and time to plan their corresponding activation.
One issue that isn’t in my favour. The majority of JA activations involve the use of Morse Code (CW mode), yep Morse Code is alive and well in Japan. Morse Code is a method of transmitting letters, numbers and prosigns, represented by a series or combinations of dits and dahs. Unlike voice mode, there are very few language barriers to Morse Code.
As I see it there is little point sitting at home wondering if a CW or SSB activator might juts turn up in a JA summit. I will take the risk of activating a local 1 point summit and try my luck. Before leaving home I checked SOTAwatch for JA activations and as luck would have it JS6TQS (W6BJB) has posted a SSB alert for JA6/NO-009 starting at 0100 UTC. 🙂
Antennas: I will take two telescopic poles, one to support a HF linked dipole and the second to support a 15m wire J-Pole. I also have a separate 1/2 wave linked dipole for 15 and 17m which I plan to hang from a tree branch in the vertical plane. My collection of J-Poles antennas includes a 12m version which I can deploy from a tree branch.
Left home at 08:20 local for a 20 minute drive to the base of the summit. The walk to the peak is a pleasant 2.2 km taking about 30 minutes. Made the summit by 09:30 only to find I had left a vital piece of my kit in the car, a 20 metre length of 3 mm cord with a 16 oz throwing weight on the end. Bugger, my plans to hoist the 15/17m 1/2 wave dipole and the 12m 1/2 wave J-Pole antenna from tree branches just took a dive! 😦
At the summit. View at ground level a typical Australian bush scene, a fallen eucalypt tree makes a perfect SOTA operating platform. One note of caution, before setting up check the log for snakes, spiders and other interesting Aussie critters.
Photos: © Copyright 2016 Andrew VK1AD
10m telescopic pole supporting a 15m J-Pole
Close up view of the guy kit and the 15m J-Pole feed point
The wind is gusting 15 to 20 km/h. I have placed a slow four helical turn in the radiating element to secure the wire against the support pole.Inverted V linked dipole broadside north-east and south-west
Rig: FT-857D operating at 40 watts output, powered by a 8.4 Ah 4S LiFePO4 battery. In direct sunlight the radio’s black case gets very hot! The white cloth is draped over the radio to keep the case and internal circuits cool.
Extract from VK1AD SOTA Activator Log: 5 November 2016 – Goorooyarroo VK1/AC-036
Summit to Summit and Dx Chasers
Chasing SOTA DX requires a lot of patience, I had been on the summit for 3 hours when Brad JS6TQS (W6BJB) posted a spot for a JA summit Tanodake, JA6/NO-009 in Okinawa Prefecture. I went on to work Brad on 12 and 15m, 24.955 and 21.300 MHz respectively. I’m very happy with that result, so too was Brad. 😉
Summit to Summit (S2S) QSOs: Hugh VK5NHG, Nick VK3ANL and Brad JS6TQS.
Great to work John ZL1BYZ and Jacky ZL1TZW in New Zealand on 18.140 MHz.
Time | Call | Band | Mode | Notes |
---|---|---|---|---|
23:40z | VK5NHG | 7MHz | SSB | Hugh S2S VK5/SE-001 S55 R55 |
23:48z | ZL1BYZ | 21MHz | SSB | John S55 R42 21.190 |
23:49z | ZL1BYZ | 18MHz | SSB | John S59 R55 18.140 |
23:50z | ZL1TZW | 18MHz | SSB | Jacky S59 R55 |
00:04z | VK5NHG/P | 14MHz | SSB | Hugh S2S VK5/SE-001 S59 R59 |
01:54z | VK3ANL/P | 7MHz | SSB | Nick S2S VK3/VN-029 S59 R59 |
02:38z | JS1IFK | 21MHz | SSB | S59 R44 |
02:51z | JS6TQS/P | 24MHz | SSB | Brad S2S JA6/NO-009 S56 R44 24.955 |
03:06z | JS6TQS/P | 21MHz | SSB | Brad S2S JA6/NO-009 S55 R52 21.300 |
Photo taken at my home QTH – three homebrew mono-band J-Pole antennas for 20, 15 and 12m
Andrew, what is the performance like of the hf j-poles? Do they need a tuner?
Hi John no tuner required, each antenna is mono band, you cannot use the antenna on a band its not designed to operate on. Performance estimate (observations of the radio’s S Meter) from on a hill top is around 2 S points over my inverted V linked dipole for the same band. For a set of four homebrew antennas, I’m pretty happy with their performance.
Cheers
Andrew VK1AD
Great Work Mate!
Love the ‘Hunting’ aspect!
Chris
VK4FR/VK5FR
Beautiful operating position! Neat write up! Thx Andrew!
Great post, Andrew. Love those J-Poles. Will have have to make myself a couple of those!
Nicely done Andrew! I really like the HF J-poles. 73, Tim KA9EAK
Great journal of this day! And very glad you got JA!
The JA S2S is cool and I’m sure Brad was thrilled. Well done!
Paul