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Peter Marks
Works at Australian Broadcasting Corporation
Lives in Sydney
182 followers|3,297,672 views
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Peter Marks

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CubicSDR with SDRPlay on Linux
I love tuning HF with this configuration. CubicSDR is a very good piece of software and it's open source.  With an SDRPlay device you can see the whole band at once and click to listen in. Here's a little video. I wish the SDRPlay USB driver wasn't closed s...
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Cheap Windows 10 tablet running SDR# with SDRPlay
Wanting to get some hands on experience of Windows 10 in tablet mode led me to pick up a very reasonably priced Teclast tablet via Banggood . It's a "Teclast X98 Plus 64GB Intel Cherry Trail Z8300 Quad Core 1.84GHz 9.7 Inch Windows 10 Tablet PC". I paid AU$...
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Radio gear as used at Mawson's hut in the antarctic
We visited the replica of Mawson's hut in Hobart this week and it has an interesting reproduction of the radio gear that would have been used. One thing that immediately struck me was the spiral inductors used in the antenna tuner. The capacitors are also n...
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A falling branch on December 29 in Connemara Avenue causes a short circuit between two phases leading to spectacular sparks further down the road. Neighbours emerged from their houses to compare notes. It seems many of us no...
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Codan 6924 Mk2 on 40m
Picked up a Codan 6924 Mk2 at Dural a few months back. Always wanted one of these lunchbox radios. The IF is 1650kHz so by feeding a 5450kHz signal from a bench VFO in to an empty crystal socket I'm able to tune 7100kHz (for example). It sounds a bit wobbly...
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Low cost 45W HF linear amplifier kit
I can't resist the low cost electronics kits out of China these days. On the bench at the moment is a 45 W HF linear  for US$20. My kit was missing the large capacitor and had extras of many of the surface mount components. The strips were marked with the v...
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Reading a GPS with Arduino
Bought a u blox neo 6M: $15 http://www.ebay.com.au/itm/191599051316 Works well: Even inside the house it found 7 satellites (I’m not sure if that’s the max). I used the TinyGPS++ library https://github.com/mikalhart/TinyGPSPlus/releases The "Device" example...
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Have him in circles
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Peter Marks

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QSL card for 100mW contact 16,194 km hand delivered
Yesterday I was emailed by Marek Petko, OK1BIL, of the Czeck Republic, who is visiting Australia for work. He noted that I had received his club's 100mW U3 WSPR beacon on 20m. Today at the ARNSW trash and treasure meeting, we met up and he handed me a QSL c...
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Digital QST - does anyone like this reader?
I recently re-joined the ARRL so that I can get QST magazine. These days I prefer to read books on tablets or a Kindle. I was hoping that in the years since I last subscribed it might have improved but alas it's as bad as before. The publishing and reading ...
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VFO with Si5351 and rotary encoder
Playing around with the Si5351 clock generator to make a VFO for a 7MHz direct conversion receiver that will be tuned with a rotary encoder. Here's the simplest Arduino sketch: #include "si5351.h" #include "Wire.h" #include Si5351 si5351; Encoder myEnc(5, 6...
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Great Article Peter.
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Peter Marks

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WSPR on Ubuntu 15.10 using WSJT-X
The original WSPR software is an amazing construction, built with c++, Fortran, lots of library code and the UI is hung together with python. I've battled with building it and getting all the dependencies resolved in recent years. Joe Taylor has re-written ...
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WSPRnet down up down...
The fantastic JT65 mode which is used for the WSPR beacon network relies on the web site at http://wsprnet.org For several years, but dramatically lately, the site has been down. WSPRnet.org is both a Drupal based discussion board with key information about...
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Have him in circles
182 people
Rolf Bertschinger's profile photo
Darragh Murphy's profile photo
Andy Cowley's profile photo
Anna Vainer's profile photo
Skye Healey Ward's profile photo
James Brown's profile photo
Gary Hayes's profile photo
Peter Long's profile photo
Warwick Kowalczyk's profile photo
Basic Information
Gender
Male
Work
Occupation
Software Developer
Employment
  • Australian Broadcasting Corporation
    Software Developer, present
  • Apple, CNN, ABC
  • Whitesmiths
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Sydney
Previously
Melbourne - Hong Kong