Projects that aren't part of ResearchRadio but still have to do with
being on the air in some sense.
- IC-7000 in 2007 Tacoma
- 160 m. modification to SWAN Mark II
- Operation of or modifiation of any station appliances
- TS-680
- Midland 13-509
- Yaseau FT-2800M (backup mobile rig)
- Byonics RTGs in the cars
- SignaLink and sound card modes
- HF and discone atennas (below)
Courtney's
Three Rules of Antennas
- Must radiate into free space efficiently.
- Must be in a portion of free space that is worth radiating into.
- Desirable to be impedance matched somehow. Gap DX-IV on
left
Homebrew 15-17-20 dipoles in center
Homebrew 10-6 dipolles nearly on roofline
Discone in tree on left (can see mast, not antenna)
These were great antennas and had to be taken down in order to remove
both trees, August 2009.
Gap down to repair capacity hat and change loading
cap from 1810 KHz to 1960 KHz.
A little trouble switching back to 1810. 2008 Feb 2
Cat (Sassy) as Radio (2009)
Katy working on antennas (1999). (The trees for these are long
gone (2009).)
AMSAT Papers Filings
with the FCC Ballooning Operating W6VIO, set the HF telemetry reception
distance record for an amateur radio balloon flight, 2437 miles.
( See records.) If you like trig, check out my derivation
of the altitude versus line-of-site range rule-of-thumb:
range (miles) = 1.23 * sqrt( height (feet) ) APRS (Automatic
Position Reporting System)
