07-01-2019, 03:36 PM
The 6M antenna was changed to a halo antenna built today, temporarily mounted on a tripod but about 4.5M above ground.. SWR is similar ( 1.15:1 ) but the polarisation is now horizontal. The "gap" is pointing west at the moment, not that there should be a variation of more than about 3-4dB in the omnidirectional pattern. I will review the signal levels in a few days before to after and see which one is actually better for WSPR activity.
Just a couple initially to compare (locals, no DX happening in SEQ on 6M)..
VK4SC -17 before, -20 after
VK4NE -5 before, -7 after.
Sort-of as expected. The J-pole nominally has 3dB gain but I have no idea whether these two stations are horizontal or vertically polarised, i.e. cross polarised..
It was good to note a few more DX spots on the 10MHz WSPR transmissions, particularly the EA8, for my 200mW :
Spotter,160M,80M,60M,40M,30M,20M,17M,15M,12M,10M,6M,4M,2M,432,Error,Grid,KM
3D2AG,,,,,,,,,,,4,,,,,RH91fv,2815, (6M)
E51BQ,,,,,,1,,,,,,,,,,BG08cs,4807, (30M)
EA8BFK,,,,,1,,,,,,,,,,,IL38bo,18721, (30M)
FK1TS,,,,,,,,,,,105,,,,,RG37fr,1488, (6M)
KA7OEI-1,,,,,6,,,,,,,,,,,DN31uo,12379, (30M)
KPH,,,,,21,,,,,,,,,,,CM88mc,11390, (30M)
The HF antenna is still not optimised for the 4 HF bands that are used to transmit WSPR : 30 / 20 /17 and 15M.
Just a couple initially to compare (locals, no DX happening in SEQ on 6M)..
VK4SC -17 before, -20 after
VK4NE -5 before, -7 after.
Sort-of as expected. The J-pole nominally has 3dB gain but I have no idea whether these two stations are horizontal or vertically polarised, i.e. cross polarised..
It was good to note a few more DX spots on the 10MHz WSPR transmissions, particularly the EA8, for my 200mW :
Spotter,160M,80M,60M,40M,30M,20M,17M,15M,12M,10M,6M,4M,2M,432,Error,Grid,KM
3D2AG,,,,,,,,,,,4,,,,,RH91fv,2815, (6M)
E51BQ,,,,,,1,,,,,,,,,,BG08cs,4807, (30M)
EA8BFK,,,,,1,,,,,,,,,,,IL38bo,18721, (30M)
FK1TS,,,,,,,,,,,105,,,,,RG37fr,1488, (6M)
KA7OEI-1,,,,,6,,,,,,,,,,,DN31uo,12379, (30M)
KPH,,,,,21,,,,,,,,,,,CM88mc,11390, (30M)
The HF antenna is still not optimised for the 4 HF bands that are used to transmit WSPR : 30 / 20 /17 and 15M.
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
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http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.