Testing a 40m Wire Dipole on Mt. Hood

Here’s a quick video showing how I deployed a DIY 40m dipole antenna on Mt. Hood a while back. Though not the most interesting video, I think it shows the results pretty well. I used an AirSpy HF+ supplied by KK7B for a project I’m working on. A Panasonic Toughbook CF-30 helped stave off the rain.

The dipole itself is two sections of 65 ft speaker wire connected to an SO-239 connector. I took a couple of sections of PVC and drilled holes in the end so I could attach some paracord and hoist it into the air. I tuned the antenna using a fancy MFJ-259C antenna tuner. Bethany and I both had very cold fingers after pulling the antenna down.

I’ll be posting more on this as it develops… for real though.

mobile APRS setup…

here’s a picture of my mobile APRS setup in the Jeep. it’s been a fun project from time to time. eventually, i plan on constructing a 2m vertical antenna to throw on the roof for better satellite reception while being mobile. i’m currently using a high-gain Comet mag-mount which is an excellent antenna. i was actually able to get out over 20 miles the other night on 146.52 with K5YLE using only 5 watts on the FT-60. for satellite reception, i’ll have to do a custom design.

the setup uses the FT-60R packet cable design into my Gentoo Linux laptop (Samsung N210) running soundmodem and Xastir.

Signals… from space?

none other than. yesterday, i attempted to record some very weak signals for the amateur satellite, ECHO AO-51, with my trusty Yaesu VX-3R. most of my attempts had been unsuccessful until i bought an additional Nagoya N-771 antenna to accompany the tiny 2m/70cm dual band radio. however, i have intercepted the signals from the low-earth orbiting satellite now on three separate occasions. the recording is definitely the weakest of the signals though due to a very low elevation in this particular pass and the interference created by the computer itself. hopefully, i’ll have a better one before long.