Harry ZachrissonJan 21 minVideo on remote hilltop 6m WSPR installation.Hayden Honeywood - VK7HH starts of 2022 with a video showing of his remote installation site and the ZachTek WSPR transmitters that is...
Harry ZachrissonSep 15, 20212 minNew features in firmware and Software version 1.10Version 1.10 brings a couple of new features to my WSPR transmitters. Prefix or Suffix to the Call Sign. The user can now chose to use...
Harry ZachrissonAug 14, 20211 minFirmware 1.2 fixes bugs related to short call signsFirmware 1.2 is now released and fixes two bugs: The feature "Send precise location" only worked properly if you call sign was six...
Harry ZachrissonJun 25, 20211 minNew WSPR TX Desktop model. 80To10I have just released a new Desktop model that covers all bands from 80m to 10m. This means it covers nearly all the bands that the...
Harry ZachrissonMay 16, 20212 minNew firmware supports long Maidenhead position reportsI just released Firmware 1.0 and PC configuration software 1.0 that is suitable for all WSPR transmitter models. Besides being the first...
Harry ZachrissonOct 12, 20203 minWSPR Receivers redesigned and soon available.My direct conversion receivers for WSPR was one of the first products I made and sold two years ago when I started ZachTek. It was a...
Harry ZachrissonAug 17, 20201 minI measured the Noise Figure of the LNB in the PARI-O and made a video of it.I have been curious of what the noise figure on the Golden Media GM-201 LNB is. GM-201 is the LNB that is included as part of my PARI-O...
Harry ZachrissonAug 14, 20201 minGeo-fence for the WSRP Pico In the latest firmware (0.92) I have implemented geofencing that will avoid transmission when a Pico transmitter and it's balloon is over...
Harry ZachrissonApr 29, 20201 minNice Video and paper on 40m band propagation using WSPR.Hi. Jim -KX4TD - have used a WSPR Desktop transmitter to investigate the propagation on the 40m band. His explanation on what is going...
Harry ZachrissonApr 3, 20202 minNew Product. High stability 10GHz LNB I have just released my new product, the High stability 10GHz LNB (PARI-O) This product solves the problem of drift in 10GHz LNBs and...
Harry ZachrissonFeb 1, 20206 minA new WSPR transmitter for BalloonsAfter a long development time I have now released my latest WSPR transmitter that is intended to be flown with small balloons. There is a...
Harry ZachrissonJan 8, 20203 minImprovements in version 0.82 of the configuration software.This Christmas holiday I took a break from building and designing electronics. Although I was suffering a bit from burn-out from working...
Harry ZachrissonDec 2, 20193 minUsing the earth as an antenna? F5VLB Earth Probe testing.Jean-Marie Polard - F5VLB has been experimenting with so called "earth probes" to transmit RF on our amateur bands. He mentioned it to me...
Harry ZachrissonDec 2, 20192 minUser story from WM3E.Carl - WM3E have done a nice write up of how he travels the US in his motor home with his wife. Like so many of us that comes in and out...
Harry ZachrissonNov 24, 20191 minVideo review of the WSPR Desktop transmitterOne of my Customers -Rob Wagner VK3BVW - have done a Video review of my WSPR Desktop product. Watch it here https://youtu.be/AXmzQP0VwZ4...
Harry ZachrissonNov 22, 20191 minOscar 100 satellite receiver on-line nowYou can now listen to the geostationary radio amateur satellite Oscar 100 from a web browser. The receiver is using my latest product...
Harry ZachrissonNov 4, 20195 minSunday repair - Broken knob on brand new FT-857D Transceiver.My FT-857 developed a fault the other month, it does not give any power out on transmit on SBB and AM, FM works fine though so the PA is...
Harry ZachrissonOct 27, 20191 minZachTek one year old, lets celebrate!It is now one year since I started my ZachTek venture, I cant believe how fast the time have gone! Time flies when you are having fun as...
Harry ZachrissonOct 27, 20192 minNew revision of WSPR Desktop transmitterI have just finished a new revision of the WSPR Desktop. The new revision use a different GPS module as I had beginning to experience...
Harry ZachrissonOct 4, 20193 minWSPR Desktop Transmitter in TanzaniaOne of the WSPR Desktop transmitters have found its way to East Africa running continuously as a WSPR beacon in Tanzania. André ...