Homebrew 2m/70cm duplexer for 23 and 13cm SOTA activations. Why buy one when you can make your own? All components are mounted on a single sided copper clad board. I will use my FT-817 at 1 watt to drive the 23 and 13cm transverters via the duplexer. The duplexer will permit instant band chages. SG-Lab…
At this link I constructed a 2m lightweight telescopic dipole where the toroid choke is a T37-0 (Tan 0 mix, 50 to 350 Mhz). This version is using a T37-17 (Blue/Yellow 17 mix, 20 to 200 MHz). In addition to the change of balun core, I made the center insulator 5 mm (~1/4 inch) longer…
2m Dipole Antenna Construction Project Lightweight portable QRP 2m & 70cm half wave dipole for SOTA or an emergency antenna for the 2m and 70cm Go-box. Parts: Section of nylon kitchen cutting board 50 x 30 mm x 7 mm (2 inch x 1 1/8 inch x 1/4 inch) 2 x 495 mm 6 section…
Saturday 16 June 2018. The weather around Canberra is cold wet and windy as a deep low, 994 hPa passes over south-east Australia. Today’s top ambient temperature is 9 degrees C while the feels-like is a chilly 2 degrees C. Tomorrow’s forecast is for a chance of snow down to 800 m ASL. My QTH…
A correspondent has asked about the tripod mounting arrangement I use for the Arrow dual band 70cm/2m Yagi. Photos: © Copyright 2016 Andrew VK1AD The SLIK F153 aluminum lightweight tripod is designed to support a camera, however when I spotted the tripod in a local camera store, I immediately visualised a lightweight VHF/UHF Yagi, suitable…
Everyone needs a new challenge for 2016. My ambitious plan for 2016 is to qualify each SOTA peak on 430 MHz (70cm) either on 432 MHz SSB or 439.00 MHz FM simplex. To qualify each summit I will need 4 unique amateur radio contacts on either frequency or a mix of unique contacts on SSB…
Get out of the Radio Shack and Live Life 