Archive for the ‘Uncategorized’ Category

Amateur Radio Weekly – Issue 102

First look: Tytera TYT MD-390 DMR HT
The Tytera TYT MD-390, the successor of the popular Tytera TYT MD-380 DMR HT, has arrived.
amateurradio.com

Just one more db
See if you can hear the difference between each 1 db increment.
VE7SL

Mobile AREDN Mesh Networking
I built a Mobile Mesh Node. It consists of 2 Ubiquiti Rocket M2 units – one for the AREDN node, and the other to act as a local wireless access point.
VA3QR

ARRL 2016 August UHF Contest Cancelled
Many commenters expressed dissatisfaction with the timing of the contest, occurring as it does at the hottest time of the year.
ARRL

Embed APRS position on your website
Paste the following HTML code on your web page, and you’ll have an automatically updating real-time APRS Google Map running in minutes.
aprs.fi

Find the signal in the noise
GPS signals are very weak, coming in at about 120 dBm which is below the thermal noise floor of ~100 dBm.
Software Defined GPS

ARRL really needs to reach out more effectively
I don’t believe that they’re doing enough to attract new members and retain existing members, and a few recent incidents have only solidified my opinion.
KB6NU

Supporting disaster communications from space
We owe it to these volunteers to do everything we can to support their work to help communities bounce back when disaster strikes.
FEMA.gov

CW call sign weight analyzer
A useful tool when trying to figure out how long it will take to send a call sign using CW.
RadioQTH

Listening to an astronaut transmit from the International Space Station
A fun and educational use of the RTL-SDR.
TRL-SDR.com

Amateur Extra Query Tools
AE7Q

Video

Rowetel FreeDV SM1000 in action
A transmission of the weekly WIA Broadcast in both SSB and then FreeDV.
YouTube

Introduction to the Icom IC-7300 HF/50/70MHz Transceiver
Icom’s first Software Defined Radio (SDR) HF radio.
Icom

The big ‘secret’ to successful DXing

jim-w6lgJim Heath, W6LG, has launched a new video series about the art of DXing. He should know about the subject — he’s been working DX on 20-meters with great success for over 50 years.

“It doesn’t take a huge station to work DX, and it doesn’t take a lot of money,” Heath says. “You can have a lot of fun with a very modest station.”

He says that one key to success is not getting caught up following the crowd. “The skill is not getting onto a DX net and putting your call sign in and waiting for your turn to work a guy in Japan. That’s not working DX — that’s being spoon-fed DX,” he says. “If you’re new to DXing, go for the easy countries: the guys who are calling CQ.”

Most people who have real success working DX do a lot more listening than talking. “A DXer listens, listens, and listens some more and learns about propagation and knows when the band is going to open to certain parts of the world,” he says.

sm5bus

Hans, SM5BUS

“A good example of a guy who has a tremendous signal out of Scandinavia day after day is SM5BUS,” Heath says. “If you’ve tuned 20-meters, you’ve more than likely heard him. He knows propagation really well. He’s learned over the years when the band is open and he listens a lot.”
chimney-two-element-yagi“While you might think because this guy is the only thing you can hear out of Scandinavia, that he has an antenna at 100 feet and 1,500 watts behind it. It’s not true,” Heath says. “He’s got a two-element Yagi attached to his chimney 10 meters above ground, but he knows when propagation is good. He’s there to work the propagation, to work the band opening. He does it over and over again and that’s been true for decades.”

If you want to learn more secrets of DXing, watch Jim’s first video below and subscribe to his YouTube channel.

Ham Talk LIVE! Episode 4: Tom Vinson, NY0V

neil-rapp-wb9vpg

It’s a call-in talk show about ham radio!
ny0vHam Talk LIVE! Episode 4
w/ Tom Vinson, NY0V
Myanmar trip – Boy Scout Merit Badge

Thursday, 10 March 2016
9:00 PM Eastern Time (02:00 UTC)

Listen to this episode LIVE (and to all previous episodes) in the player below:
[spreaker type=standard width=620px autoplay=false show_id=1607081]

Amateur Radio Newsline Headlines – March 9, 2016

wilbanks-ae5dw
From this week’s Amateur Radio Newsline Headlines:

  • Hams in Ohio have been preparing for an April 23 event called Near Vertical Incidence Skywave Antenna Day.
  • In the Charleston, West Virginia area, hams are preparing for that area’s big Hamfest. In its 32nd year, it has a whole lot of new offerings.
  • FCC records show that growth in amateur licenses continued through 2015, with a 735,405 licensees.

First look: Tytera TYT MD-390 DMR HT

tytera-tyt-md-390The Tytera TYT MD-390, the successor of the popular Tytera TYT MD-380 DMR HT, has arrived. Jason Johnston, KC5HWB, unboxes the upgraded DMR HT in the latest episode of his show, Ham Radio 2.0: LIVE! From The Hamshack.

“I think I’m the first one to have them listed online, but that won’t last long,” says Johnston.

Like the MD380, the TYT MD390 is 400-470MHz, features 1000 channels, and is DMR Tier 1 and 2 compatible. New to the MD390 is an IP67 dust/water ingress protection rating (immersion up to 1m).

tytmd390The radio is currently available in the Grapevine Amateur Radio online store for $179.99. Johnston says MD390 is priced similarly to the MD380 when it first came out. “I expect it will probably drop in three to six months,” he says.

In the video, Johnston does a thorough job reviewing the features of the radio. He compares the MD-380 vs. the MD-390 and talks about how he’s been using the radio around the Dallas-Fort Worth area for the past few days since the first units arrived.

Johnston says the radio feels heavier and much more sturdy than the MD-380 it replaces. He also praises its strong audio. “It sounds just as good as the MD-380, maybe even a little bit better,” he says.

If you’ve followed his show, you’ve noticed that he has really stepped up his game in terms of video production. Great job, Jason!

Amateur Radio Weekly – Issue 101

IC-7300 retail price and shipping dates set
Universal Radio is accepting orders for the Icom IC-7300.
The SWLing Post

IC-7300: If King Midas was a Ham
Icom details IC-7300 features.
Icom

Raspberry Pi 3 released
For Raspberry Pi 3, Broadcom has supported us with a custom-hardened 1.2GHz 64-bit quad-core ARM Cortex-A53.
Raspberry Pi

How to work Heard Island
This VK0EK Blog Site is now switching over to “DXpedition Mode.”
VK0EK.org

FCC outlines anti-pirate agenda for 2016
The man who’s made pirate radio a personal crusade has big plans to try and wipe out what he calls “poison ivy in the garden of the radio spectrum.”
diymedia.net

Google is building a 100kW transmitter
Of the few details listed in the documents, one thing does pop out as exceptionally odd: a 70-80 GHz transmitter with an effective radiated power (ERP) 96,411 W.
Hack A Day

ARES supports Army and Air Force MARS communications exercise
More than 300 Amateur Radio Emergency Service (ARES) members participated in the first quarterly Military Auxiliary Radio System (MARS) US Department of Defense communications exercise of 2016 (COMEX 16-1).
ARRL

Taking the radio out of radio
Unfortunately there’s a detrimental sub-hobby that’s been around a long time, perhaps as far back as when there was spark and a new mode called CW was emerging.
amateurradio.com

Raspberry Pi-powered transmitters broadcast Syrian radio
The devices have a range of between 4 to 6km (2.5 to 3.75 miles), which is enough to cover an entire town.
BBC News

Video

SO-50 and a giant pile of red clay
SO-50 pass on 2016-01-30.
YouTube

Empire of Noise
Radio jamming documentary tells the story about the practice and political importance of radio jamming in the 20th century.
YouTube

Organizing RF adapters
A short video on how I now sort my connectors and adapters for my RF projects.
Life of Kenneth

North Carolina ham hopes for radio contact with ISS crew

john-brier-kg4akvWhile the astronauts and cosmonauts on the International Space Station conduct experiments nearly 250 miles above earth, John Brier, KG4AKV, is on a mission of his own closer to home. The Raleigh, North Carolina ham hopes to fulfill a personal goal: have a voice QSO with a member of the ISS crew.

Brier hasn’t always been active since becoming licensed at age 15, but his interest was renewed two years ago after listening to a school radio contact through the ARISS program. Later, he successfully received a satellite image from the space station and began making contacts through SO-50, an easy-to-work voice satellite. He developed a keen interest in satellite communications, especially with the ISS.

“I listen to them talking to schools almost every month and I really like receiving the slow-scan TV images they send out a few times a year,” he says.

Brier has an active YouTube channel where he features videos of his satellite work. He also started a blog about communicating with the ISS, including hints for receiving slow-scan TV signals from space.

Even if he isn’t ultimately successful in making a two-way contact, he won’t be too disappointed. “I enjoy just receiving them, too,” Brier says.


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  • Matt W1MST, Managing Editor