Archive for the ‘Uncategorized’ Category
How do they ever make a profit?
On the internet you can buy a dual-band handheld with antenna, battery, chargers(2), earpiece and belt clip for just £25.29. At this price I find it unbelievable they can make a profit. I think it is even cheaper if you buy a batch of 3.
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See http://www.banggood.com/LBaofeng-UV-5RA-Yellow-Dual-Band-Transceiver-Radio-Wakie-Talkie-p-947385.html .
Shipping is just 29p. shipped to the UK by registered air parcel. It is available in a variety of case colours.
Using the W5OLF 500mW 10m WSPR beacon today
| W5OLF WSPR beacon – complete – no PC needed |
This WSPR-AXE really is a very impressive little rig, in my case for 10m WSPR. Because of my current disabled state – I find all electronics building just about impossible – Jay very kindly sold me a built unit to evaluate. Results in just a few hours of operating have been truly impressive. No PC is needed as long as the push button is pressed at the start of an even minute. Jay says it stays stable for weeks thereafter. I ran mine for 3.5 hours and got masses of decodes. After lunch it has been getting LOTS of spots from the USA. I am sure it will reach Australia soon.
The unit needs about 15 minutes to frequency stabilise and after that it always on, but it randomises the slots within the WSPR transmit window. This means it is unlikely to be “clobbered” by more powerful stations or cause others co-channel issues.
Best DX report (so far) today is FR1GZ (9724km).
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| 10m WSPR – unique spots with the W5OLF beacon today, arranged by distance |
If you want to buy one Jay W5OLF may be contacted on [email protected]t .
Hardened Power Systems Launches Crowdfunded Campaign to Rebuild
Bill Harrison, KK4JPT, has announced that Hardened Power Systems has launched an online campaign to fund the rebuilding of their business.
On Halloween, the company suffered a devastating fire resulting in the loss of their manufacturing facility.
Hardened Power Systems manufactures several popular ham radio products including the D-HAP and JuiceBox.
Here is where you come in, we need your financial commitment to begin the process of rebuilding this business. We are determined to remain faithful to our commitment of quality, durability, and cost effectiveness. The process of rebuilding will take time and we are prepared for the journey ahead, but to expedite this process we need your support. In return we will make a promise to compensate you for your gift with limited editions of some of our gear to commemorate this event.
W5OLF WSPR kit
Jay has been working on new versions of his little WSPR beacons. All being well I should receive a 10m 500mW out version in the next few weeks.
Jay is writing the manual(s) and has asked me for my feedback, which I shall, of course, provide. The new version is a single board (again) but transmits continuously, randomising the TX frequency on each TX burst to minimise interference to/from others. It needs several minutes to thermally stabilise but uses the uP to generate everything needed such as the WSPR tones, so no PC is needed. The transmission is started manually on the start of an even minute with a push button. The PA can be separately enabled.
This should be fun. I’ll give more information when it arrives and I get a chance to try it on the air.
Inspecting antennas – by radio controlled quadcopter!
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.
Weather VS MFJ 1788 loop
| Outcome of my damp MFJ 1788 |
| The work of the internal tuner |
| The SWR of the antenna |
PSK on 20 meters today
Turned the PRC-104 on today while I was out and left it on spotting signals.
I was using a 3 element yagi pointed South during the 6 hour period.
The radio in use was my PRC-104 military manpack using a signalink USB and Acer notebook.
The following screenshots show the stations that were heard at my location in EN58hh, or Thunder Bay, Ontario.















