#interview with the vampire#iwtv#sam reid#jacob anderson#amc tvl
seen from Netherlands
seen from Germany
seen from Singapore
seen from Yemen
seen from Kazakhstan
seen from Türkiye
seen from Kazakhstan
seen from Russia
seen from Australia
seen from United States
seen from Australia
seen from United States
seen from Kazakhstan
seen from Singapore
seen from Kazakhstan
seen from Canada
seen from China
seen from Brunei
seen from United States
seen from China
I received 762 stations in 8 countries in about a 20 hr period. Decoding PSK31 using FLDigi linked to PSK reporter. Farthest station was in Biobio, Chile. #hamradio #hf #shortwave #digital #psk31
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PSK31, Raspberry Pi and HAM radio
Back to my regularly scheduled postings
A friend of mine is considering using a Raspberry Pi to decode PSK31 signals from his transiever. I searched my scrambled brain for traces of information that were planted there when I was a Junior Electrical Engineering student at UT. PSK stands for Phase Shift Keying and further investigation revealed that the 31 has to do with the ‘symbol changes’ per minute (Baud). I have not been into RF circuits much. I had enough trouble making transistor amplifiers work back then. I would find that if I put a finger in a particular place on the circuit, the amplifier would be stable. I needed a finger equivalent circuit that I could solder in place.
The way back machine is running in high gear. A junior... that probably was 1970 or 1971. 48 years ago.
QRP tests with FT-817 and EndFedz 10/20/40 antenna at Iron Mountain, Lake Oswego, OR.
For newcomers to the ham radio digital mode called PSK31, here's how it works.
A mockup of the compact, iPhone-based PSK31 station I’ve been working on (Yaesu FT-817 not shown). The orange box houses a custom phone/radio interface, and it will also serve as a stable base upon which the iPhone can rest when in the field (propped up, as seen here, on a small folding stand). A waterproof, roll-up keyboard is connected to the iPhone via a Lightning to USB Camera Adapter. (Yes, I could instead use a Bluetooth keyboard, but that will create more battery drain for the iPhone... and the Bluetooth keyboard I have is definitely not waterproof!)
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It's long overdue for a post and, now that it's cold out, I thought I'd start documenting and sharing some of my projects. It was a race with winter to get the last of my outside [sic. antenna] projects complete, and with a week of vacation, I decided to switch my focus to exploring new modes, namely digital.
FLDIGI is setup, fully integrated into my station, and I've made my first 30 QSOs on PSK31. For those who are interested in digital modes, FLDIGI is the program to use; what it lacks in UI is makes up for in broad support for digital modes and supported rigs.
This is a great video to help those who are interested get started with FLDIGI and digital mode operation.
73
Preparing for the next field operation ... iPad 2 + App Psker + FT-817 + Easy Digi adapter #psk31 #ft817 #dx #field #portable
#ft817 #bpsk #psk31 #qrp (em Jacareí)
