High frequency
176
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27
EPISODES
19
PODCASTS
Search complete. 176 mentions across 27 episodes found for "High frequency".
Sep 19, 2026
This Week in DX - 09/19/2026
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1:47BillHOST
So you still got a couple of days.
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1:49BillHOST
He's using CW sideband and FT8 MSHV on HF with verticals and an inverted V plus a five element Yagi on six.
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1:58BillHOST
And you can QSL that direct to his home QTH or use LOTW or Clublog.
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2:05BillHOST
From Bahrain, which is Alpha 9, we have this.
ARRL Audio News September 18, 2026
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3:56Rich MosesonHOST
For Mancuso, it has meant getting a special event call sign, K6S, and setting up a public demonstration station on October 17th for scouts from throughout the Silicon Valley Monterey Bay Council.
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4:11Rich MosesonHOST
He says they'll be running HF, VHF, and UHF simultaneously, adding that scouts will be hands-on at the mic and keyboard the whole time.
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4:20Rich MosesonHOST
This is their event, he says, not just something they're watching.
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4:25Rich MosesonHOST
Frequencies and other details are in this week's ARRL letter.
9 MINS LATER
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13:40Rich MosesonHOST
The Australian Space Weather Forecasting Centre reports that there are currently three numbered sunspot regions on the solar disk, and that all three are stable.
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13:49Rich MosesonHOST
No flares are expected over the next several days.
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13:52Rich MosesonHOST
The global HF propagation forecast for middle latitudes is normal to fair today, followed by normal propagation in the days that follow.
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14:02Rich MosesonHOST
Predicted 10.7 cm radio flux from the SWPC... is today and tomorrow 90, 95 on Sunday, then an uptick to 100 on September 21st, followed by 110 on the 22nd, and 105 on September 23rd.
Amateur Radio Newsline Report 2551 for Friday, September 18th, 2026

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0:16Stephan KinfordHOST
Gibraltar continues two-year-long ham radio anniversaries.
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0:20Stephan KinfordHOST
And HF Radio comes to a 12,000-year-old site in Turkey.
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0:25Stephan KinfordHOST
All this and more as Amateur Radio Newsline report number 2551 comes your way right now.
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0:30speaker_1NARRATOR
From around the world, this is Newsline, Amateur Radio's first independent on-the-air news and bulletin service.
The Antenna on the Consulate Roof
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1:31Herman PoppleberryHOST
Then underneath that, you have radio networks that don't depend on the host country for anything.
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1:37Herman PoppleberryHOST
And the bottom layer, the one that works when everything else is gone, is HF.
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1:41Herman PoppleberryHOST
Why HF specifically? What does shortwave get you that a satellite phone doesn't? No infrastructure between you and the other end.
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1:50Herman PoppleberryHOST
A satellite phone depends on a satellite constellation that somebody owns and somebody can deny.
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1:55Herman PoppleberryHOST
A cellular call depends on towers that the host government can switch off.
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2:00Herman PoppleberryHOST
VHF and UHF are line of sight, so they're fine for talking to your own security detail in the parking lot, but useless for reaching London.
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2:08Herman PoppleberryHOST
HF bounces off the ionosphere.
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2:10Herman PoppleberryHOST
You need a transceiver, an antenna, and power.
What Makes a Network Truly Sovereign?
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0:29CornHOST
Please verify facts.
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0:31Herman PoppleberryHOST
Daniel's been turning over this antenna on the British Consulate roof, the HF fallback for when everything else goes dark, and he wants to know whether sovereign communication network was a term of art or just something I reached for.
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0:44Herman PoppleberryHOST
His real question is bigger.
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0:46Herman PoppleberryHOST
What makes a system sovereign? Is it about reducing dependence on other sovereigns or on non-state actors too? And how did the word escape the embassy and end up on cloud brochures and AI data centers?
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1:48CornHOST
And each one is a place where dependence creeps in.
C
1:51CornHOST
The physical layer is the antenna, and the radio, and the spectrum.
C
1:55CornHOST
HF, high frequency, three to thirty megahertz, bounces off the ionosphere.
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2:00CornHOST
It doesn't need satellites.
The Radio That Didn't Kill Eli Cohen
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9:59CornHOST
What would that gear have looked like in '65?
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10:03Herman PoppleberryHOST
The Soviet Union had been building HF direction finders since the '50s.
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10:07Herman PoppleberryHOST
They had mobile units, van-mounted, with loop antennas and rotating arrays.
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10:12Herman PoppleberryHOST
By the '70s, they had the Pelican system, which was a two-channel HF direction-finding receiver, quite good for its time.
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10:19Herman PoppleberryHOST
But the Pelican came later.
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10:22Herman PoppleberryHOST
In '65, you're looking at earlier gear, probably a single-channel receiver with a directional antenna that an operator turns by hand while watching a signal strength meter.
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11:43Herman PoppleberryHOST
And that's my problem with how this story gets told.
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11:46Herman PoppleberryHOST
Triangulation is a word that makes it sound like a solved problem, a matter of geometry.
Why HF Radio Still Matters When Networks Fail
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0:45CornHOST
First, the nomenclature.
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0:47CornHOST
Is HF radio the same as shortwave, or are we talking about two different things? Second, the diplomatic scenario.
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0:55CornHOST
Why does HF matter when the host nation turns hostile and cellular and wired internet go dark? Third, the aviation case.
C
1:03CornHOST
Why is HF still used for position reporting over the Atlantic when satellites and Starlink exist? Fourth, the security layer.
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2:58Herman PoppleberryHOST
VHF and UHF, by contrast, are essentially line of sight.
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3:02Herman PoppleberryHOST
They go until the curvature of the Earth gets in the way, and then they need a repeater or a satellite to keep going.
C
3:08CornHOST
So if I'm standing on a beach with a VHF radio, I can talk to a boat maybe twenty or thirty kilometers out, and then the horizon just swallows the signal.
H
3:17Herman PoppleberryHOST
The radio horizon for VHF is slightly farther than the visual horizon because of atmospheric bending, but the principle holds.
This Week in DX - 09/12/2026
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5:39BillHOST
The Seychelles, Sierra 7, Sierra 79 stroke Delta Lima 2 Sugar Baker Yankee Kazimir is QRV from Mahe until September 21st.
B
5:51BillHOST
He is using CW sideband and FT8 MSHV on HF with verticals and an inverted V plus a five element Yagi for six meters.
B
6:01BillHOST
QSL direct to his home QTH or use LOTW and club log OQRS.
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6:08BillHOST
From Bahrain in the Middle East, Alpha 9, we have this one.
5 MINS LATER
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11:19BillHOST
Sao Tome and Principe, which is Sugar 9.
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11:22BillHOST
The Sugar 9 radio de-expedition will run from October 17th to the 31st from Tamarindo.
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11:28BillHOST
Planned is HF in various modes.
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11:31BillHOST
The antennas are spider beams, hex beams, 40 meter vertical, 80 through 10 meter, and fed half wave, and a six meter five element Yagi.
RSGB GB2RS News Bulletin for September 13th 2026
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2:13G4NJHHOST
A significant body of work has been done by RSGB volunteers and specialists to prepare for the conference and RSGB has submitted 10 papers, making it the largest contributor of any of the member societies.
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2:26G4NJHHOST
The four key areas where the society have input are spectrum protection and HF strategy, protecting 430 to 440 megs, IARU Region 1 governance and licensing and examinations.
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2:38G4NJHHOST
The Society would like to thank Spectrum Forum Chairman Marie Hyman, G6JYB, who led the RSGB expert team who prepared the Society's papers for the conference.
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2:51G4NJHHOST
Marie will attend the conference in person with RSGB Head of Delegation.
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2:56G4NJHHOST
RSGB President Bob Beebe, GU4YOX, RSGB HF Manager Ian Greenshields, G4FSU, and RSGB Board Director Nathan Nuttall, MM9OCC, who has been contributing to the International Development of Youth Amateur Radio through the IARU Region 1's Youth Committee.
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3:17G4NJHHOST
For further information about the RSGB's input, go to RSGB Notice section on the Society's website.
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3:24G4NJHHOST
You can read all the papers submitted for the conference.
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7:23G4NJHHOST
Contacts will be possible via the QO100 satellite.
S5E22 - Yaesu microphone discussion
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1:36John CrookHOST
Now, I'm not talking about the microphones that come like with...
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1:39John CrookHOST
the mobile radios or that come with standard with the HF radios.
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1:44John CrookHOST
No, normally you're getting what they call a palm mic, right? The palm mic plugs into there and it's designed to be held in your hand.
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1:52John CrookHOST
And for VHF, UHF radios, okay, not a problem, right? Because that's usually we use them in a mobile fashion and that kind of thing.
J
1:59John CrookHOST
But with the HF radio, some people are like, I don't really want a palm mic.
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2:02John CrookHOST
I want a desktop mic.
J
2:04John CrookHOST
And then some people are using their favorite VHF, UHF, dual band, whatever, mobiles as bass radios, and they want a desktop microphone.
J
2:14John CrookHOST
So that's where we're going to talk about desktop microphones for today.
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