At 02:08 AM 6/28/2004 -0400, Larry Phipps wrote: Jim, I'm not that familiar with the beacons, but since your post I did a little research. There are a couple of major problems. First, the transmissio
At 07:02 AM 6/28/2004 -0400, Pete Smith wrote: At 02:08 AM 6/28/2004, Larry Phipps wrote: Frankly, I think these are show-stoppers, as Larry says. Another issue is that S-meters can be quite non-line
One of my colleagues at work fly's model Helicopters. Seems like a model helicopter with a small beacon transmitter might be the way to make a poor man's HF antenna range. Alternatively, a tethered h
A model helicopter with a GPS receiver, a UHF link for the NMEA data, and software for navigation and position/signal-strength recording -- what a cool idea! Are there off-the-shelf model helicopter
At 04:15 PM 6/28/2004 -0400, Dave Bernstein wrote: A model helicopter with a GPS receiver, a UHF link for the NMEA data, and software for navigation and position/signal-strength recording -- what a c
Well, I've never written an autopilot, but one based around an on-board GPS sounds like a fun project. My hands are a bit full with DXLab right now, but I will give it some serious thought. 73, Dave,
Dave et al: I've found things like this http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=2563&item=5905564095&rd=1 on e-Bay for the past few months. Maybe they have the RS-232 controlled versio
At 20:51 28.06.2004, Jim Lux wrote: I wouldn't use the s-meter. I'd use a receiver with the AGC disabled and look at the audio output with a PC. The PC lets you digitize the signal so you can measure
At 04:40 AM 6/29/2004, corneliuspaul@gmx.net wrote: At 20:51 28.06.2004, Jim Lux wrote: I wouldn't use the s-meter. I'd use a receiver with the AGC disabled and look at the audio output with a PC. Th
Hi Dave, Maybe it's different now, but earlier GPS units were pretty inaccurate in the up and down direction. For example, I was trying out my Garmin GPS II on the ferry boat between Vancouver and Va
Hmm... This would appear to have severe ramifications for tuning the 40m portion of my C4SXL. F12 has a tuning procedure on their web site which involves adjusting the jumpers on the linear loading w