-
Recent Posts
- SOTA Mountain Goat – at last July 30, 2022
- New VK port-a-log version released named, Warburton_01 November 14, 2021
- New VK port-a-log version released named, Gisborne_02 March 13, 2020
- New VK port-a-log version released named, Gisborne_01 February 2, 2020
- Changes coming to SOTAwatch and VK port-a-log January 20, 2020
- VK3 portable activities gathering June 9, 2019
- AG7UO – my newest call sign May 11, 2019
- Harry Angel sprint 2019 May 4, 2019
- New VK port-a-log version released, named Moondarra_03 January 4, 2019
- New VK port-a-log version released, named Moondarra_01 February 18, 2018
Archives
Meta
Categories
Came across your post on 742 battery replacement. Appreciate your comments. You start with a few pics of location and board solder points. My questions is on board removal. Service manual doesn’t go into detail of removing the boards. I’ve opened my 742 to replace display lights and band mod replacement, so I feel confident I can do the battery replacement. Any advise on board removal steps? Thnks in advance 73 Mel N6MEL
Hi Mel
http://vk3zpf.com/wp-content/uploads/TM742_battery%20replace.pdf has the instructions that I have downloaded quite some time ago.
I hope this assist.
G’day VK3ZPF,
just wanted to let you know I heard you up here in Port Macquarie today. You were 6 and 3 through my 23m long EFHW and my old Kenwood TS530-s. I didn’t reply as I don’t have my license yet (next weekend hopefully), but I thought you’d appreciate knowing you were heard up here.
73,
Derek.
Hi Derek
Great to know my system is working.
Please give me a call once you get your license – It would great to get another new call sign in my log.
Good day O.M.VK3ZPF,
In your 80/40 trap dipole instructions for building the traps you didn’t give the approximate wire lengths for the antenna wire going from the balun(1/1,I gather) to the 40 meter trap and from the trap to the end of the antenna,although you did so for the 20/40/80 version of the traps.
I”m in the process of setting up an old commercial trap dipole antenna 40/80.I believe the distance between the traps is roughly 23 and 33 feet.I’m curious to know how close these measurements are to your antenna.
One of these days I plan on building yours if I can get a good price on some all weather insulated&stranded wire. Thanks for the info and your article is very interesting.
Thanks & 73′s Joseph A. Cyr VE1AXJ/VE9CYR.
Hi Joseph
When first built the wires from the balun to 40m trap were 11m and from the 40m trap to the end were also 11m long. These lengths need to be trimmed as detailed above.
73
Peter VK3ZPF