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28MHz QRSS 21 October
After seeing spots of my 28MHz WSPR signals into SE USA during Sunday morning:-, It seemed a good time to try QRSS DFCW on the band. Running just 300mW into the DX-EE I was received in Nova Scotia by...
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KX3 HF Band Decoder
Having had a KX3 for nearly 6 months now, the biggest handicap has been the lack of band outputs to switch external equipment (eg LPF in external PA, antennas etc). These are standard on the K3 but...
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WSPR on UBUNTU
I have used WSPR and WSJT digimodes for many years now but always on windows machines so I thought I ought to try using it on my Dell D630 Ubuntu Laptop Initially I tried installing the deb packages...
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WSJT on UBUNTU
After the previous success on WSPR on UBUNTU it was next time to try WSJT. I found an install package for an old version of WSJT but this did not have the ISCAT mode. So I turned to Roger W3SZ who was...
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WSPR on a Raspberry Pi using Raspbian
Having got WSPR and WSJT working on my Ubuntu laptop, the next challenge was to get WSPR working on the more restricted Raspberry PiFirst discovery was that a new version of the RPI image was...
View ArticleWSJT on Raspberry Pi using Raspbian
After the previous success on WSJT on UBUNTU it was next time to try WSJT on the Raspberry Pi. It only needed a few tweaks, all related to where portaudio19 was installed on the RPI:- svn co...
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ADS-B aircraft reception
For a change today I hooked up my Modesbeast ADS-B aircraft receiver to my homebrew colinear, placed on the inside window sill and left it running for the day. The following shows the trails of the...
View Article500kHz in USA
From the LF reflectors I had noticed new LF licences had been issued in the USA and new modes had appeared so it was time to take a look with my HPSDR and DX-B wire antennaMonday night I looked on...
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Digital modes at Thanksgiving
Being Thanksgiving today time for some radio. I dusted off my ARDMEPT trannsmitter which is capable of multiband WSPR and QRSS running 250mW. Having the HF6V multiband Vertical switching antennas...
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28MHz WSPR 23 November
Slightly better conditions, more European stations and into south america10m WSPR 11/23
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500kHz WSPR 24 November
After watching the football decided to have a look on 600m using the HPSDR and the DX-B antenna for 160/80/40/30m which slopes to the north east at a height of 20'. WE6XGR (WE2XGR/6 but wspr takes...
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Hermes in motion
Finally got a few minutes to put together my new SDR radio. I collected the TAPR Hermes Transceiver board mid week http://openhpsdr.org/hermes.php. The PA and enclosure are from Apache labs...
View ArticleKX3 Maintenance
Time to take the KX3 apart and address a couple of issuesI finally got hold of the KXBC3 Battery charger/Real time clock that was ordered Dec 28 2011 (11 months!). Took about 30 minutes to fit. Now I...
View ArticleThe KX3, the fridge and the hairdryer
In my post on Jul 7 2012 I noted that frequency stability of the KX3 was not good enough for digital modes. It had been pointed out that the KX3 was designed as a portable mountain top rig for use on...
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Hermes as a VNA: Transmission
Tonight I found a short time to try out the VK6APH VNA code to use my Hermes Board/ANAN 10 as a VNA. As suggested in the V1.9 user manual I put a 6dB attenuator on the Hermes TX output to define the...
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Hermes as a VNA: Reflection
Next task was to look at filter return loss. In addition to hermes one needs a reflection bridge. This has a port for RF input, a port for reflected output and a port to connect the device under test....
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ADS-B using the R820T USB Dongle and PlanePlotter
G4VXE recently alerted me to software capable of producing ADS-B data under windows. http://sdrsharp.com/index.php/a-simple-and-cheap-ads-b-receiver-using-rtl-sdr. I downloaded the executable and after...
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ADS-B using the R820T USB Dongle and VirtualRadar
Having managed to produce the Data I also wanted to try displaying it with virtual radar. This is available from http://www.virtualradarserver.co.uk/ To use it with ADSB# server some parameters have...
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