#HF

Robert [KJ5ELX] :donor:FuturisticRobert@infosec.exchange
2026-02-11

Radio Free Euphonia currently broadcasting at 6935 kHz AM modulation as of this post. Fairly decent signal here in Houston.

hfunderground.com/board/index.

#pirateradio #hf #radio

2026-02-01

Na enige bouw ervaringen besloten alles eens samen te gaan vatten in een blogje. Recentelijk de QMX omgebouwd om de 40m band erbij te zetten, een mooie aanleiding om eens wat te delen.

https://pd1sco.kalf.org/post/qmx-40m-conversie/

#hamradio #amateurradio #radioamateur #HF #radio

2026-01-30

Today's #USAF High Frequency Global Communications System traffic all seems to be coming from callsign "Sky Chief", and the messages begin with the strange phrase "four quarto".
11175 kHz USB

#HF #HamRadio #AmateurRadio #ShortWave #SWL #HFUnderground #USMIL #Iran

Robert [KJ5ELX] :donor:FuturisticRobert@infosec.exchange
2026-01-27

This is an interesting oddity. I'm listening to HF and roughly between 10640 kHz and 10900 kHz where there's a lot of active OTH radar, there's also these evenly spaced out random "pips." I'm looking around the bands and I'm only seeing it here. Would be a bad place to put a digital mode righ tnow due to over the horizon radar activity.

#shortwave #hf #radio

Open Research InstituteOpenResearchIns@micro.blog
2026-01-14

Congratulations to @abraxas3d@mastodon.radio for getting a nice #HF antenna article in #ARRL #QEX.

2026-01-09

HF đang hủy bỏ giới hạn lưu trữ được hưởng lợi trước đây và bắt đầu tính phí người dùng. Những tài khoản có trên 1TB dữ liệu (như 1,34TB) từng được miễn giảm, nay bị tính thêm 25$/TB cho phần vượt mức. Người dùng báo đã bị charge 25$ dù không tăng dung lượng nhiều. Cẩn thận với hóa đơn bất ngờ! #HuggingFace #StorageBilling #CloudStorage #HF #LưuTrữ #TínhPhí #CảnhBáo

reddit.com/r/LocalLLaMA/commen

Harvest Malletusharvestmalletus@tiggi.es
2026-01-07

Woo! The MyAntennas 7510-1K EFHW antenna got here! I'm so excited, and am just waiting for some coax to get here so I can mount and get it all set up! It feels so high quality, so I'm really looking forward to seeing how it performs. I'll finally be able to get on something other than 10m, 12m or 6m! YAY!

#hamRadio #hamShack #antennas #hf #efhw

There is an end-fed antenna transformer and spool of antenna wire sitting on a counter top next to a small bit of cord to help string it up.
2026-01-07

Canadian #NORAD Commander On What It Will Take To Defend The High North
Maj. Gen. McKenna offers exclusive insights into the growing #threats to the #Arctic from #China and #Russia, and what NORAD is doing about it.
twz.com/air/canadian-norad-com
#HF #defense

2025-12-29

Just checked into the #HF Activity Group on 18.157.5 mHz

hfqso.com/
#HamRadio #AmateurRadio

Harvest Malletusharvestmalletus@tiggi.es
2025-12-28

So, I've done it. I ordered an EFHW antenna from myantennas.com, which covers 75m-10m! I still have to pick up a few other things to make it all connect in to my shack, but I will finally be able to get on other bands soon! Now to just hope for a good enough day to get on the roof and hook up coax and lightning blocks and get everything all mounted. I'm so excited!

#antennas #hf #efhw #amateurRadio #hamRadio #hamShack

2025-12-24

Руководство на заводе и в IT

Люди в мире руководства делятся на два типа, одни сидят в личных кабинетах, а другие со своей командой. Попробуем разобраться, в чём дело, и какой начальник ты?

habr.com/ru/articles/864644/

#Плохой_начальник #Хороший_начальник #работа_в_it #работа_в_itкомпании #работа_в_itиндустрии #Hf #Работа_на_заводе

Dantali0n :arch: :i3:dantalion@fosstodon.org
2025-12-21

Finally put up a real #HF antenna, a #g5rv as they are called.

Its been a long time goal to put this up but its on a temporary mount now. During summer there will be time to mount it properly with wall brackets and without tethers.

You see I made this antenna with a friend but they have gotten quite ill and won't be here for much longer. So I put this mount up quickly together with my father so we could demonstrate the antenna.

Antenna hang from a vertical pole using ropes and a pulley to lower and raise the antenna mount. The feedline is 10 meters of chicken wire. The dipole wires are each about 15 meters in length. The height of the pole is 9 meters.vSWR of the antenna tuned using a manual T tuner. The antenna is tuned for 40 meters reaching a 1/1.005 vSWR and -52dB S11 logmag.The 40 meter band during yesterdays Croatian DX contest, really busy and crowded many strong signals both LSB (SSB) and CW.
2025-12-17

🤖 Ny norsk praterobot fra #LTG med chat-grensesnitt! NorMistral-11B-thinking er en åpen språkmodell (#LLM) finjustert for å følge instruksjoner og å resonnere før den svarer.

💬 For tilgang til chat: chat.llm.sigma2.no
🤗 Nedlasting fra #HF: huggingface.co/norallm/normist
👷‍♂️ Hovedutvikler: LTG-stipendiat David Samuel
ℹ️ For mer informasjon, se mn.uio.no/ifi/forskning/gruppe

#NLProc #NorMistral #Norsk #Norwegian

2025-12-08

According to the #Aurora app on #iOS last night wasn’t the big hit, but tonight is.

I’ll fire up the #APRS iGate for the day, but will keep #HF #FT8 band-hopping monitor off until this has passed.

Bar graph of KP Index forecast indicating 5.00 at 5pm CT this evening, and 6.67 tonight @ midnight & 6am tomorrow.
2025-12-04

"Solar maximum," they say, and yet I still haven't turned on an HF radio in 3 years, not since F2 propagation was shit. And I'm passing it by, day by day, at its peak. Because I no longer love any of my hobbies. None. No longer.

#AmateurRadio #depression #HF

Three Gsthreegs@c.im
2025-11-24

My first contact while activating a #POTA spot this weekend was that operator’s first #HF #hamradio contact after recently upgrading to General. I’m glad they took the time to let me know and I was honored to be the first in their HF logs.
It was a great way to start off that activation.

2025-11-20

@cinebox
Nope, hydrofluoric acid is it's common chemical name. AKA hydrogen fluoride #HF

Just as citric acid is citric acid in a dry, solid form, or dissolved in your lemonade.

But yes, when dissolved in water, HF possesses the property of acting as an acid (just like citric acid does in water).

Airgas MSDS for hydrofluoric acid

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