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@mcdanlj@social.makerforums.info
2025-10-01 21:52:08

The ARRL has a long online text band plan which they have condensed for HF into The Considerate Operator's Frequency Guide which is not really in a convenient form to print and carry with you into the field when operating portable

List of frequencies and frequency ranges with annotated usage:
1.800–2.000	CW
1.800–1.810	Digital Modes
1.810	CW QRP calling frequency
1.843–2.000	SSB, SSTV, other wideband modes
1.910	SSB QRP
1.995–2.000	Experimental
1.999–2.000	Beacons
3.500–3.510	CW DX window
3.560	QRP CW calling frequency
3.570–3.600	RTTY/Data
3.585–3.600	Automatically-controlled data stations
3.590	RTTY/Data DX
3.790–3.800	DX window
3.845	SSTV
3.885	AM calling frequency
3.985	QRP SSB calling frequency
7.030	QRP CW calling …
List of frequencies and frequency ranges with annotated usage:
14.230	SSTV
14.233	D-SSTV
14.236	Digital Voice
14.285	QRP SSB calling frequency
14.286	AM calling frequency
14.300	Maritime Mobile Net 12PM–10PM ET
18.100–18.105	RTTY/Data
18.105–18.110	Automatically-controlled data stations
18.110	IBP/NCDXF beacons
18.1625	Digital Voice
21.060	QRP CW calling frequency
21.070–21.110	RTTY/Data
21.090–21.100	Automatically-controlled data stations
21.150	IBP/NCDXF beacons
21.340	SSTV
21.385	QRP SSB cal…
@jacobgudiol@mastodonsweden.se
2025-12-01 12:50:57

The study involved leading laboratories across multiple countries testing identical samples of gut microbiome bacteria. Results revealed startling inconsistencies, with accuracy measures varying dramatically between laboratories – despite analysing the same samples.
MHRA-led study reveals major inconsistencies in global microbiome research

@mcdanlj@social.makerforums.info
2025-11-01 22:31:21

Today's #HamRadio #POTA (Parks On The Air) adventure. Absolutely gorgeous, couldn't-be-better fall weather on a Saturday, so that it was a little surprising that we found parking space and that all the picnic tables were empty. Used my spiderbeam push-up mast to hold my inverted-v link…

Map of my 5W POTA activation. Probably mostly right, but the contact marked as AZ was actually IL.
@compfu@mograph.social
2025-11-30 10:26:30

I just bought Indiana Jones and the Fate of Atlantis on Good Old Games for less than 3 bucks. I have never played it. It's 33 years old by now...
#scummvm #gog #LucasArts

In-game screenshot of Indiana Jones and the Fate of Atlantis. It shows the inside of a temple with beige stone walls and stone floor in a pixelized art style. Three people are standing in the room (Indiana Jones in brown leather clothing, a woman with long red hair wearing blue trousers and another man wearing a tropical explorer outfit).
The bottom quarter of the screen is filled with activity verbs like give, open, push or pull as well as items the player has collected. A magazine and Indy's…
@yaya@jorts.horse
2025-11-02 06:13:24

hello sharks we're seeking a million dollars for our revolutionary new microwave that lets you Omegle style video call other people who are microwaving things and the call ends when your foods done
jorts.horse/@lilmissanthrope/1

@arXiv_quantph_bot@mastoxiv.page
2025-10-01 10:49:27

Microwave-to-Optical Quantum Transduction of Photons for Quantum Interconnects
Akihiko Sekine, Ryo Murakami, Yoshiyasu Doi
arxiv.org/abs/2509.26349

@arXiv_quantph_bot@mastoxiv.page
2025-10-01 10:36:27

Arbitrary Instantaneous Bandwidth Microwave Receiver via Scalable Rydberg Vapor Cell Array with Stark Comb
Yuechun Jiao, Yuwen Yin, Yunhui He, Jinlian Hu, Cheng Lu, Jingxu Bai, Zhengyang Bai, Weibin Li, Suotang Jia, Jianming Zhao
arxiv.org/abs/2509.26026

@mcdanlj@social.makerforums.info
2025-09-28 23:03:42

Today's 5W QRP #HamRadio #POTA activation of US-4857 Jordan Lake Educational State Forest was fun radio therapy. Successful QSOs on 30 meters, 20 meters, and 17 meters. Ironically, I set up a 40m end-fed half-wave antenna, and then only one of the 10 QSOs was on a resonant ban…

Map of the continental US showing the paths for ten morse code conversations using only 5 watts.
Map of part of the northeast US showing 5 watt conversations when I was the one calling CQ (any station).
@mcdanlj@social.makerforums.info
2025-12-01 01:22:19

I just discovered that the "prefix group name" option for #FreeCAD VarSet properties was removed a couple months ago. That feature was such a wonderful affordance for reducing typing and now it's gone. I missed the discussion when it was being axed and it makes me very sad. It looks like "I don't like the aesthetics so you shouldn't have it" won the day. ☹

@mcdanlj@social.makerforums.info
2025-11-02 13:21:57

I decided to try to participate just a little in this weekend's #HamRadio ARRL sweepstakes CW contest to stretch my tyro skills. In a busy contest, I decided to set up not1mm and configure my radio for sending from a contest logger to try to reduce wasting time with nervous keying failures. Took three really broken exchanges (the first ones hand-sent) that made me feel bad for the other…