Category Archives: Ham Radio

First Amateur Radio in Geosynchronous Orbit Will Aid Disaster Communications

Could it be we will have a true geosynchronous satellite for Amateurs in 2017?! I hope so, and we will not need an antenna this big to use it!

This was first reported in Wireless Design Magazine

Researchers at the Ted and Karyn Hume Center for National Security and Technology are preparing to send an amateur radio transponder into a geosynchronous orbit in 2017.

“Seven days a week, 24 hours a day, 365 days a year, a new ham band will be available for the Americas,” said Robert McGwier, a research professor in the Bradley Department of Electrical and Computer Engineering and the Hume Center’s director of research. “It will allow rapid deployment to disaster areas and support long-haul communications for first responders.”

This would be the first amateur or “ham” radio payload in a geosynchronous orbit, and would significantly enhance communications capabilities for amateur radio operators, in particular following natural disasters or other emergency situations. The Hume Center team met with Federal Emergency Management Agency Administrator Craig Fugate in September to discuss the project.

The full article may be found following this link.

I have really been enjoying trying to catch the satellites and the International Space Station as I am able, but it really is catch as catch can due to orbiting times and changing horizon points. A geosynchronous orbit satellite means we could plant an antenna pointed directly at the satellite and find it there day or night. I for one am ready!! I might even dedicate an inexpensive dual-band radio to it assuming typical satellite repeater protocol is used.

I will post more details as I find out additional information. Cheers! Robert

Robert Gulley, AK3Q, is the author of this post and a regular contributor to the SWLing Post. Robert also blogs at All Things Radio.

P5/3Z9DX: Successful ham radio activation of North Korea

How to use the SDRPlay RSP as a panadapter

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SDPlay-RSP

In this post, I will show you how to use an SDR as a panadapter for a commercial communications receiver. I’m using an Icom R72 and a SDRPlay RSP, but you can do it with nearly all receivers and SDRs.

The Icom R72 is a double conversion HF (0-30 MHz) communications receiver.

A panadapter lets you see the spectrum of your receiver (it gives you a broader, higher-level picture of what’s around your tuned frequency). After using it, you’ll wonder how you’ve been using your receiver without a spectrum display! 🙂

Almost all the radios we use are of superhetrodyne type. To connect a SDR to the radio, you should first find its 1st IF mixer output (if it has more than one Intermediate Frequency stage).

To find it, the best way is to consult the service manual. The first IF of Icom R72 is 70.4500 MHz, so we can use RTL-SDR dongles too.

Here’s a part of R72’s schematics, extracted from its service manual:

IC-R72-Schematic-Mehdi-Asgari

Look at the R82 resistor; it’s located at the output of first IF stage, so I soldered a connector to its pins (its other pin is connected to the ground)

Between the R82 resistor and the output, we’ve added a series 470-ohm resistor (to prevent loading the IF stage)

Click to enlarge.

The other side of this connector is connected to the antenna input of my SDRPlay RSP.

Now I can view my spectrum on a PC.

Here’s a screenshot of CubicSDR on Mac OS X (you can use other apps like HDSDR, SDR Console, etc.):

CubicSDR-Screenshot-Mehdi

Although this post was about the SDRPlay RSP and Icom R72, this procedure can be done for almost any combination of receivers and SDRs provided that your SDR covers the frequency of first IF stage.

Also, don’t forget that you should tune the SDR to the frequency of IF–in this case: 70.4500 MHz.

Mehdi Asgari, the author of this post, is a regular contributor to the SWLing Post. Mehdi lives in Tehran and is an active member of the EP2C amateur radio club.

Dave reviews the Yaesu FT1XD

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SWLing Post contributor, Dave Zantow (N9EWO), has completed a review of the Yaesu FT1XD (FT1XDR) “System Fusion” Digital-Analog Handheld Transceiver.

The FT1DX 2 meter/440 HT provides both analog and digital communications on both bands with up to 5 watts. It also has wideband receiver that covers from 500 kHz to 999 MHz (US version, less cellular) including the AM and FM broadcast band. It even has a built-in ferrite bar for mediumwave/AM reception.

What does Dave think?

Click here to read Dave’s full review.

KCUR Interview: US Amateur Radio during The Great War

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Battleships of the Hochseeflotte, 1917. (Source: Wikimedia Commons)

(Source: KCUR via the Southgate ARC)

When America declared war on Germany in 1917, most radio stations came under government control, reserved for war efforts. On this edition of Up To Date, we learn why HAM radio operators were prevented from broadcasting during The Great War.

Guests:

Jonathan Casey is the Edward Jones Research Center Manager at the National World War I Museum.

Herb Fiddick is the amateur radio voice of the National World War I Museum.

This weekend, the National WWI Museum will host special event station WW1USA. The station will be manned by amateur radio operators for 31 consecutive hours, beginning Saturday, December 12 at 10 a.m. through Sunday at 5 p.m. The event is free. For more information go to theworldwar.org.

Click here to listen to the interview on KCUR.

The annual “Santa Net” on 3916 kHz

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Santa-Radio-Vintage

If you have a shortwave radio with SSB mode, you too can listen to the Santa Net on 3916 kHz LSB every night until Christmas starting at 01:30 UTC (7:30 PM CST). Of course, if you’re an amateur radio operator, you can talk to Santa as well!

(Source: Southgate ARC)

Santa Net 3916 kHz

Larry Shaunce WD0AKX provides a reminder that at this time of year kids can talk to Santa at the North Pole via amateur radio

Every year before Christmas, there is the Santa net on 3916 kHz on the 75 meter ham radio phone band 7:30 CST or 0130 UT. Round up your kids, grand kids, or neighbor’s kids and let them talk to Santa at the North Pole.

Watch Talk To Santa By Ham Radio – It’s The Santa Net On 3916 kHz!

https://www.youtube.com/watch?time_continue=263&v=KfFk430lxXU

Morse code training in the Air Force

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(U.S. Air Force photo by Kemberly Groue)

Many thanks to SWLing Post reader, Pete Carron (W3DKV) who writes:

“Thought you might be interested in the following article from Goodfellow Air Force Base in Texas, posted May 20, 2015. Apparently Morse Code still isn’t dead, not even in the military!”

Morse code training moving to Goodfellow

GOODFELLOW AIR FORCE BASE, Texas — Morse code training at Fort Huachuca, Arizona, will transfer to the 316th Training Squadron at Goodfellow, allowing the Air Force to take the reins for future training.

The move stems from the Army’s redirection of training requirements, leaving the Air Force as the sole remaining branch attending the course taught at Fort Huachuca.

In the last 10 years, the Army renovated the course to cater as a secondary skill set and serve as a support function, rather than being a single source of intelligence gathering. As this happened, the Navy began teaching their own course at Pensacola, Florida.

The Goodfellow course will train 10 students annually starting July 1. Tech. Sgt. Ryan N. Kilcrease and Senior Airman James M. Gosnell, 316th Training Squadron Morse code instructors, will be the first to teach the course here.

“Morse will never fully go away as long as it remains the cheapest, most reliable way to communicate,” said Kilcrease. “Our adversaries will continue to use it, so we still need to be able to understand them if we want to be able to continue our mission successfully.”

Gosnell believes that the course still holds benefits for the Air Force.

The military recognized the benefits of Morse code for communication after Samuel F. B. Morse completed the first coded message in history by transmitting, “What hath God wrought?” from the U.S. Capitol to a railroad station in Baltimore, Maryland, May 24, 1844.

President Abraham Lincoln relied on it during the Civil War to gather intelligence and communicate directly with his generals.

The Department of Defense embedded it heavily into all armed forces as a communication device with the Army-lead training in Fort Devens, Massachusetts. In 1993, the training moved to Fort Huachuca, Arizona, where Operating Location B, 316th TRS, is located.

Thanks for sharing this article, Pete!

I like Tech. Sgt. Ryan N. Kilcrease’s quote:

“Morse will never fully go away as long as it remains the cheapest, most reliable way to communicate”

If you listen to the CW (a.k.a. Morse code) portions of the ham radio bands, you’ll hear that CW is still very much alive and well. It is an incredibly reliable and robust communications medium. As we CW operators say: “CW always gets through!”