LHS Episode #187: New Tile on Your Noise Floor

This is Episode #187 of Linux in the Ham Shack. In tonight's episode, we have a special round table discussion. We've brought in listeners and a total outsider to talk about--well, stuff. Topics include 630-meter operation, ham radio in Cuba, photo editing applications, svxlink, qtel, thebridge and a whole lot more. We also discuss marching for science. But mostly, we just had a great time and hope you do, too.

73 de The LHS Crew and Friends


Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].

AmateurLogic 103: The Un-planned Episode


AmateurLogic.TV Episode 103 is now available for download.

Tommy repairs his mobile antenna. Emile makes a NOAA Heads Up Alert. Mike builds the Canadian Balun. Peter’s Balloon fails and he repurposes an old laptop screen. Plus all the usual stuff.

1:16:38

Download
YouTube


George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

ICQ Podcast Episode 235 – Portable Multi-Band Dipole

In this episode, Martin M1MRB / W9ICQ is joined by Chris Howard M0TCH, Martin Rothwell M0SGL, Dan Romanchik KB6NU and  Ed Durrant DD5LP to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episode’s feature is Portable Multi-Band Dipole.


Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

ICQ Podcast Episode 235 – Portable Multi-Band Dipole

In this episode, Martin M1MRB / W9ICQ is joined by Chris Howard M0TCH, Martin Rothwell M0SGL, Dan Romanchik KB6NU and  Ed Durrant DD5LP to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episode’s feature is Portable Multi-Band Dipole.


Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

The JK BevFlex-4 Antenna



This past week, comments regarding an interesting new low-noise directionally-switched receive antenna popped-up on both the Topband reflector and the IRCA (BCB DXers) reflector.

The new JK BevFlex-4 is reported to work very well without requiring a lot of real estate for deployment. The antenna was designed by Geoff Mendenhall, W8GNM, and Ned Mountain, WC4X.

There are several things that make this package a little different. The antenna can be configured in four basic forms: CLASSIC BEVERAGE, BEVERAGE ON GROUND (BOG) / BEVERAGE IN SOD (BIS), INVERTED EWE, or as a FLAG. What is quite different however is its flexible feedpoint allowing the antenna to be fed at any point along its length when used in the BOG or BEVERAGE configuration. The antenna is completely passive and requires no preamplification although, in some configurations, it is suggested for use above 7MHz.

Full details can be found at the JK Antennas website, as well as the manual and a FAQ page.

The FAQ sheet indicates that it will perform from LW through to 10m but the most dramatic improvement in reception from users has been noted on the lower bands. It sounds like it might make an interesting antenna for NDB DXing as well.

In the BOG form, the antenna can lay right on the ground or be buried (BIS) just below the surface using RG-6 for the actual antenna element. Other configurations allow much smaller, stealth-sized wire to be employed.

An interesting YouTube video of the antenna in action as well as an in-depth description may be viewed here:


Here is one comment from an east coast topbander:

I also bought one this year....deployed it as an EWE, as that’s all the room
I have, small lot in a subdivision.....in order to work them you need to
hear them, and once I put that up, I could hear !!! first put up as EU/VK-ZL
and worked several in the DX contest, but when the african dxpedetions were on, moved it to due east/west., and worked all of them, S01, etc.....front to back is remarkable on 160, it works ok on 80, (mine was 10ft high and 38 ft long) but really rocks on 160 !!!!, and really cuts down the line noise/static I normally hear on my transmit Inv L.

Perhaps this may be your answer for a small effective receive antenna for LW and above but even if not, their website description makes for interesting reading.

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

The JK BevFlex-4 Antenna



This past week, comments regarding an interesting new low-noise directionally-switched receive antenna popped-up on both the Topband reflector and the IRCA (BCB DXers) reflector.

The new JK BevFlex-4 is reported to work very well without requiring a lot of real estate for deployment. The antenna was designed by Geoff Mendenhall, W8GNM, and Ned Mountain, WC4X.

There are several things that make this package a little different. The antenna can be configured in four basic forms: CLASSIC BEVERAGE, BEVERAGE ON GROUND (BOG) / BEVERAGE IN SOD (BIS), INVERTED EWE, or as a FLAG. What is quite different however is its flexible feedpoint allowing the antenna to be fed at any point along its length when used in the BOG or BEVERAGE configuration. The antenna is completely passive and requires no preamplification although, in some configurations, it is suggested for use above 7MHz.

Full details can be found at the JK Antennas website, as well as the manual and a FAQ page.

The FAQ sheet indicates that it will perform from LW through to 10m but the most dramatic improvement in reception from users has been noted on the lower bands. It sounds like it might make an interesting antenna for NDB DXing as well.

In the BOG form, the antenna can lay right on the ground or be buried (BIS) just below the surface using RG-6 for the actual antenna element. Other configurations allow much smaller, stealth-sized wire to be employed.

An interesting YouTube video of the antenna in action as well as an in-depth description may be viewed here:


Here is one comment from an east coast topbander:

I also bought one this year....deployed it as an EWE, as that’s all the room
I have, small lot in a subdivision.....in order to work them you need to
hear them, and once I put that up, I could hear !!! first put up as EU/VK-ZL
and worked several in the DX contest, but when the african dxpedetions were on, moved it to due east/west., and worked all of them, S01, etc.....front to back is remarkable on 160, it works ok on 80, (mine was 10ft high and 38 ft long) but really rocks on 160 !!!!, and really cuts down the line noise/static I normally hear on my transmit Inv L.

Perhaps this may be your answer for a small effective receive antenna for LW and above but even if not, their website description makes for interesting reading.

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

Amateur Radio Weekly – Issue 154

Emergency communications driving increase in Ham Radio operators
Hams standing by and ready to help during disasters or other events.
Emergency Management

Tornado siren hack came via radio frequency
Our system is not software related and on a computer. It’s a radio system.
The Dallas Observer

World Amateur Radio Day is April 18th
Celebrating Amateur Radio’s contribution to society.
ARRL

Portable mini paddle for the Elecraft KX line as a kit
The building experience was just fine.
VA2SS

North Korea broadcasts numbers station as nuclear test looms
Pyongyang is reportedly broadcasting encrypted messages reminiscent of those used to contact spies during the Cold War.
The National Interest

Russian Buzzer disappears
The Russian buzzer on 6998.0 kHz has disappeared.
Southgate

International Girls in ICT Day
An initiative that empowers and encourages girls and young women to consider car​eers in the growing field of ICTs.
ITU

Heat shrink tubing and the chemistry behind its magic
Heat shrink tubing was a product of the Cold War era.
Hack A Day

Video

Install TQSL and load existing certificate on Raspberry Pi 3
If you already have a TQSL callsign cert on your existing computer, this is for you.
K0PIR

QRPP (less than 1 watt) QSO
Using my homebuilt 1Watter transceiver from kitsandparts.com for a QSO on 40m tonight was a bit tough.
Ham Radio QRP

Amateur Station Logging
Episode 18 addresses log books and logging, including when to log and not to log.
Ask Dave

Flevo shortwave station is silent
With its four powerful transmitters and 17 directional aerials it distributed thousands of Radio Netherlands Worldwide radio programs.
Vimeo


Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

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  • Matt W1MST, Managing Editor