26 Sep 2023
Reedited & posted three of my past published TCA articles: "Telemetry-over-WSPR: Part 1 & Part
2" (RM056 & RM057) and "Shortwave Radiograin" (RM058).
Added support material for my next TCA (Nov-Dec 2023) column
"Snap Circuits Part 4: The Snapino" (RM062).
26 Aug 2023
Added support material for my
next TCA (Sep-Oct 2023) column "Snap Circuits Part 3: Optical Communications" (RM061) plus supplement. See Radio
26 June 2023
Added support material for my next TCA (Jul-Aug 2023) column "Snap Circuits Part 2: Mr. Morse Gadget" (RM060)
plus supplement. See Radio Magic.
17 May 2023
Added support material for my next TCA (May-Jun 2023) column "Snap Circuits
Part 1: Unleash Your Creativity!" (RM059) plus supplement. See Radio Magic.
24 December 2022
Added support material for my
next TCA (Jan-Feb 2023) column "Shortwave Radiogram" (RM058) plus supplement. See Radio Magic.
24 November 2022
got around to reediting, updating & posting five of my past published TCA articles: "Antenna Tales" (RM051), "FM Voice
& Data & the ISS" parts 1 & 2 (RM052 & RM053) & "Radio Science: VLF" parts 1 & 2 (RM054 &RM055). See Radio Magic.
20 November 2022
The amazing NOAA satellite flight engineers have done it again! They have
remotely fixed whatever was ailing the aging NOAA-15 back in October & it's once again transmitting APT satellite weather
31 October 2022
Added support material for my next TCA column "Telemetry-over-WSPR: Part
NOAA Official Notice: "The NOAA-15 AVHRR scan motor current began showing signs of instability on Oct 18 at approximately
1800Z when the current began to gradually rise from about 205 mA to about 250 mA where it remained until Oct 24. At about 0000Z on
Oct 24, the current began rising again throughout the day peaking at about 302mA on Oct 25. Scan motor temperature began rising about
the same time & is currently steady at about 29 degress Celsius. The instrument is still producing data but it is highly degraded.
This behavior may be a sign of an impending scan motor stall but requires further investigation. Options for recovery are limited."
Added support material for my next TCA column "Telemetry-over-WSPR: Part 1 (RM056) & supplemental articles
(see Radio Magic).
21 August 2022
Really exciting news because the ISS finally has separate FM voice VHF/UHF & VHF data/APRS
transceivers. Special event SSTV VHF FM transmissions will still use 145.800 MHz (mode PD180).
From ARISS.org: August 12,
2022—"ARISS is pleased to announce that starting yesterday, August 11, simultaneous operations of the ARISS Voice Repeater & digital
APRS communications on the International Space Station (ISS) is now a reality. Current ARISS operations include voice repeater transmissions
with the JVC Kenwood D710GA in the Columbus module & APRS packet operation from an identical radio in the Service Module (Zvezda).
Packet operations are on 145.825 MHz.
ARISS-International Chair Frank Bauer, KA3HDO states, “Simultaneous operation of APRS &
the voice repeater on ISS is transformative for ARISS and represents a key element of our ARISS 2.0 initiative, providing interactive
capabilities 24/7 that inspire, engage and educate youth & lifelong learners—especially life-long learning in ham radio operations.” Bauer
continues, “Our heartfelt thanks to Sergey Samburov, RV3DR, for making this crucial ARISS 2.0 initiative become a reality.”
Columbus Module radio uses the callsign NA1SS & the new Service Module radio uses RS0ISS. Aside from the callsigns, the radios
are identical & packet operations are the same as before. You can use RS0ISS, ARISS or APRSAT as the packet path. Also, both
radios are expected to be on full time, except during educational contacts, EVAs, & dockings or undockings."