Some years ago I went to a BBQ where someone had a wi-fi controlled quadcopter remotely controlled from an iPad. It was very impressive with its on-board cameras for navigation and filming what was happening down below.
I see AE5X has a video showing the inspection of his antennas (from above) using one of these. My antenna farm is trivial by comparison and can be pretty well examined at ground level.
See http://www.ae5x.com/blog/various/youtube-de-ae5x/ .
6 Nov 2014
First 10m WSPR 50mW stateside reports today
At 1312z, W3CSW (5886km) and WG2Z (5600km) were the first USA stations to spot my 50mW WSPR signal today, at -26dB S/N and -21dB S/N respectively. Others are now following. KB9AMG (6300km) has spotted me twice now. At the moment there seem to be fewer USA spots with my 50mW on 10m WSPR than yesterday? Early in the day I guess. Things may change.
UPDATE 1536z: W3CSW is now copying my 50mW 10m WSPR at -19dB S/N, implying he would probably copy me on 5mW or even less if his noise floor is low.
UPDATE 1536z: W3CSW is now copying my 50mW 10m WSPR at -19dB S/N, implying he would probably copy me on 5mW or even less if his noise floor is low.
Sunspots
Sunspot number today is 113 and 10m daytime propagation is forecast to be "fair". Still VK5MR (16144km) audible despite the 10dB pad in my antenna lead is OK. He runs 5W. He has already copied G0LRD's 50mW 10m WSPR beacon.
10m WSPR 50mW
VK5MR (16144km) was still being copied on 10m WSPR this morning despite the 10dB pad in my antenna lead.
So far, the first USA station copied here was W3CSW (5886km) at 1220z.
Best DX spots of my 50mW on 10m WSPR this morning came from LZ1OI (2153km), CT1JTQ (1843km) and UR/SWL56 (2283km). Generally, running very low power results in fewer reports but not really fewer reporters. The active stations get you weaker and less often.
So far, the first USA station copied here was W3CSW (5886km) at 1220z.
Best DX spots of my 50mW on 10m WSPR this morning came from LZ1OI (2153km), CT1JTQ (1843km) and UR/SWL56 (2283km). Generally, running very low power results in fewer reports but not really fewer reporters. The active stations get you weaker and less often.
5 Nov 2014
10 USA reports running 50mW on 10m WSPR
I think 10m has closed for me to the USA for the day. I'll leave 10m WSPR running a little longer just in case. At 2010z, 10 reports had been received, all at 50mW and all from stations in the USA. This was an interesting experiment as I know my antenna is not the best. 500mW seems almost like high power now!
The FT817 was set at 500mW and a good quality rotary attenuator (set to 10dB insertion loss) added as close as possible to the rig, therefore producing 50mW into the antenna lead and antenna. Because the cable will have some loss at 28MHz (1dB?) the actual radiated power will have been a little under 50mW.
UPDATE 2100z: The 10m band has definitely closed here to the USA. Only G4IKZ (local) spotting me now. at 50mW.
The FT817 was set at 500mW and a good quality rotary attenuator (set to 10dB insertion loss) added as close as possible to the rig, therefore producing 50mW into the antenna lead and antenna. Because the cable will have some loss at 28MHz (1dB?) the actual radiated power will have been a little under 50mW.
UPDATE 2100z: The 10m band has definitely closed here to the USA. Only G4IKZ (local) spotting me now. at 50mW.
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| 10m WSPR spots running 50mW today |
USA (again) on 10m WSPR and daytime MF
The first stateside station copied on 10m WSPR today was WG2Z (5600km) at a decent -10dB S/N at 1202z. I think this is a little earlier than yesterday?
UPDATE 1210z: I was on 472kHz until I QSYed to 10m WSPR. G3ZJO is a very decent signal now on MF. For example at 0922z he was around -15dB S/N. He has been even stronger, which for 10mW ERP is excellent.
UPDATE 1250z: The first USA spot of my 500mW today as by WG2Z at 1218z. Not long after I was spotted by KC2GMM at -17dB S/N at 1228z. USA stations spotting my 500mW WSPR regularly on 10m now.
UPDATE 1504z: Tomorrow I may try 10m WSPR with a 10dB pad in the antenna lead so ERP will be about 50mW, but RX 10dB deaf too. No I'll try it NOW! Looks like 5mW (or less) would be enough with W3CSW.
UPDATE 1754z: 8 USA reports, so far, of my 50mW and, even with a 10dB pad in the RX lead I still copied G0LRD (25km)'s 50mW and W7CNK's 5W (7458km).
UPDATE 1210z: I was on 472kHz until I QSYed to 10m WSPR. G3ZJO is a very decent signal now on MF. For example at 0922z he was around -15dB S/N. He has been even stronger, which for 10mW ERP is excellent.
UPDATE 1250z: The first USA spot of my 500mW today as by WG2Z at 1218z. Not long after I was spotted by KC2GMM at -17dB S/N at 1228z. USA stations spotting my 500mW WSPR regularly on 10m now.
UPDATE 1504z: Tomorrow I may try 10m WSPR with a 10dB pad in the antenna lead so ERP will be about 50mW, but RX 10dB deaf too. No I'll try it NOW! Looks like 5mW (or less) would be enough with W3CSW.
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| 10m WSPR spots, to 1620z, with 50mW |
Sunspots
Sunspot number today has declined to 98 with daytime 10m propagation forecast to be "fair". So far here this morning, just Europeans copied and copying me.
4 Nov 2014
54 stations on 472Hz WSPR
This evening (just now) there were 54 stations active on 472kHz WSPR. Several are shown as being on RX (including me!) but this may be because we've not been spotted on TX in the last 10 minutes.
UPDATE 2252z: IW4DXW (1190km) has just been spotted here on 472kHz WSPR.
UPDATE 2306z: Will be on 472kHz WSPR overnight.
UPDATE 2306z: Will be on 472kHz WSPR overnight.
Kanga Kits UK
See http://www.kanga-products.co.uk/ .
Kanga is one of the classic names in QRP kits both in the UK and the USA. They make some fine products at quite reasonable prices. Shown below (linked from their website) is their OpenQRP transceiver.
Kanga is one of the classic names in QRP kits both in the UK and the USA. They make some fine products at quite reasonable prices. Shown below (linked from their website) is their OpenQRP transceiver.
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| http://www.kanga-products.co.uk/index.php?option=com_content&view=article&id=76&Itemid=78 |
472kHz WSPR
Since 1900z I have been back on 472kHz WSPR using 5mW ERP. So far, spots given and received, have been from the usual G stations. Let us hope for some new spotters tonight!
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