An Analysis of the HF Antennas at 33 BBHR Azimuth for Various Countries Terrain toward Various Countries The HF Antennas at 33 BBHR HFTA Response for Each Antenna Comparison of Antennas at Specific Azimuths Larry Banks, W1DYJ First licensed: 1962 (KN1VFX) W1DYJ since 1966 Amateur Extra 10 Matthews Way Harpswell ME 33 Blueberry Hill Road Woburn MA Page 1 Woburn Antenna Analysis
33 BBHR Azimuth for Various Countries Japan 337 330 360/0 30 31 India 35 Iceland Australia 250-345 300 53 England 60 70 Spain California 270 270 90 New Zealand 249 110 South Africa 240 120 210 150 154 French Guiana 180 Chile 181 177 Argentina Page 2 Woburn Antenna Analysis
33 BBHR Topo Map and Azimuth for Various Countries 10,000 ft 5,000 ft Page 3 Woburn Antenna Analysis
33 BBHR 3D Maps Looking North Looking South Looking West Looking East Note: Vertical dimensions are enhanced by a factor of 8 Page 4 Woburn Antenna Analysis
33 BBHR Terrain toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 5 Woburn Antenna Analysis
The HF Antennas at 33 BBHR 20M: Homebrew Moxon Rectangle@ 12M W1DYJ design see QST April 2009 / Antenna Compendium #8 Built and erected September 2004 Fed with 80 RG8x 0.88 db matched loss 100 W at transmitter 82 W at antenna 40M / 80M: Alpha-Delta DX-CC @ 7M Erected May 2001 Fed with 100 RG58 0.75 db matched loss (80M) 1.1 db matched loss (40M) 100 W at transmitter 85 W at antenna (80M) 78 W at antenna (40M) 10M: Homebrew 5 element yagi @ 10M Design from 1994 ARRL Antenna Book Built and erected April 2000 Fed with 70 LMR240 0.91 db matched loss 100 W at transmitter 81 W at antenna 15M: Homebrew dipole @ 11M W1DYJ design Built and erected November 2010 Fed with 70 RG8X 0.95 db matched loss 100 W at transmitter 80 W at antenna The VHF stack is not part of this discussion K1FO 12 el 2 M (CW / SSB) CC 11 el @ 45 (FM) HB 7 el 6M (CW / SSB) Page 6 Woburn Antenna Analysis
10M: 5 el @ 30ft: HFTA Response toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 7 Woburn Antenna Analysis
15M: Dipole 33ft: HFTA Response toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 8 Woburn Antenna Analysis
20M: Moxon Rectangle @ 36ft : HFTA Response toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 9 Woburn Antenna Analysis
40M Dipole@ 22ft: HFTA Response toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 10 Woburn Antenna Analysis
80M Dipole@ 22ft: HFTA Response toward Various Countries 31 India 35 Iceland / EurRussia 53 England 70 Spain 110 South Africa 154 French Guiana 177 Argentina 181 Chile 249 New Zealand 270 California 300 Australia 337 Japan Page 11 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 35 Iceland / European Russia 10 M 15 M 20 M 40 M 80 M Page 12 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 53 England 10 M 15 M 20 M 40 M 80 M Page 13 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 110 South Africa 10 M 15 M 20 M 40 M 80 M Page 14 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are BEHIND Hill 177 Argentina 10 M 15 M 20 M 40 M 80 M Page 15 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 270 California 10 M 15 M 20 M 40 M 80 M Page 16 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 300 Australia 10 M 15 M 20 M 40 M 80 M Page 17 Woburn Antenna Analysis
Comparison of Antennas at Specific Azimuths Note: Antennas are IN FRONT of Hill 337 Japan 10 M 15 M 20 M 40 M 80 M Page 18 Woburn Antenna Analysis