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72 de Larry W2LJ
QRP - When you care to send the very least!
Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

TX Factor goes digital as Mike Marsh gives Bob McCreadie an introduction to operating on DMR, Yaesu Fusion and D Star as part of his digital fun. In part one of the series, they take a trip to a local farm to see how an amateur has set up his own Fusion Gateway.

Ever wonder why QSL cards take a long time to complete their journey? Bob finds out what we can do to help speed up he process.

Pete visits Norwich to spend a day with the Norfolk Amateur Radio Club at their annual field day event, Radio Active to discover why they won the coveted prize of RSGB Large Club of The Year.

Episode 17 of TX Factor is now live at www.txfactor.co.uk

Happy Summer viewing!

TX Factor Team

Nick Bennett 2EØFGQ co-hosts TX Factor with Bob McCreadie GØFGX and Mike Marsh G1IAR. Contact the team at [email protected]

Just in case you missed it - THE Summer QRP Classic - The Flight of the Bumblebees is on!  The event is on Sunday, July 31st from 17:00 to 21:00 UTC.


To get a Bumblebee number, you have to first to to the Bee database to see what's been assigned:

https://docs.google.com/spreadsheets/d/1r0ICCSjbErmIfRQz2U7hZJkSccuQ5ukHEtVXzmOF5eM/edit#gid=119767365

Send an e-mail to [email protected] and be sure to include your first name, call sign, the field location you plan to operate from and your three top choices for a Bee number.

Keep in mind that you are encouraged to participate in the FOBB as a home station - but only Field Stations can have a Bee #.

After you've sent KI6SN your request, be sure to keep an eye on the roster at the link above. That's where you will be able to determine what number you've been assigned.

The rest of the rules can be found at http://arsqrp.blogspot.com/2017/07/announcing-ars-2017-fobb.html

FOBB is, was, and continues to be the best Summer Outdoor QRP event, bar none. It's the equivalent of the Masters, or Wimbledon or Tour de France of the QRP Summer contest season. Get out there, get some sunshine and some breeze in your hair and have fun!

I can hear wings buzzing already!

72 de Larry W2LJ
QRP - When you care to send the very least!
Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

Just in case you missed it - THE Summer QRP Classic - The Flight of the Bumblebees is on!  The event is on Sunday, July 31st from 17:00 to 21:00 UTC. To get a Bumblebee number, you have to first to to the Bee database to see what's been assigned: https://docs.google.com/spreadsheets/d/1r0ICCSjbErmIfRQz2U7hZJkSccuQ5ukHEtVXzmOF5eM/edit#gid=119767365 Send an e-mail to [email protected] and be sure to include your first name, call sign, the field location you plan to operate from and your three top choices for a Bee number. Keep in mind that you are encouraged to participate in the FOBB as a home station - but only Field Stations can have a Bee #. After you've sent KI6SN your request, be sure to keep an eye on the roster at the link above. That's where you will be able to determine what number you've been assigned. The rest of the rules can be found at http://arsqrp.blogspot.com/2017/07/announcing-ars-2017-fobb.html FOBB is, was, and continues to be the best Summer Outdoor QRP event, bar none. It's the equivalent of the Masters, or Wimbledon or Tour de France of the QRP Summer contest season. Get out there, get some sunshine and some breeze in your hair and have fun! I can hear wings buzzing already! 72 de Larry W2LJ QRP - When you care to send the very least!
Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

The first antenna I put up after we moved in here was a simple 2×5 meter dipole sloping down from the roof into our garden. I wrote about it – and the noise it received – here

Last year summer I finally had time to do some maintenance on my old CB-whip and put it up on the sheet metal roof.

I put it up mainly to get my station licence, because the amount of noise it received on shortwave was as much as the dipole, hence I didn’t log many QSOs with it. Still, it turned out to be a marvelous antenna to do medium- and longwave DXing and I logged some 285 different NDBs on longwave in the last 12 months.

But now, this summer, it is time to get serious about putting up a decent antenna. Being a sensible guy I set myself some goals:

• The antenna has to be cut for the 20 meter band
• It has to have lower noise pickup than the rooftop vertical
• I have to use whatever materials I have lying around
• Money can only be spend on the odd nuts and bolts

Then there is the question on how to determine what is good, better and best. My thoughts were to use WSPR to monitor how well an antenna would receive. If you do this scientifically you use two identical setups with only one variable: the antenna. Unfortunately I don’t have two IC-7200s, so I decided to go for an alternate approach: day one the first antenna, the other day the other antenna. This adds the variable of different conditions during different days, but over the course of a week or two you will get a broad picture, I reckoned.

The first two antennas I compared were the rooftop vertical and the sloping dipole. They were both resonant on 20 meters and I used that bands WSPR frequency to compare. After comparing for two weeks I found only a minimal difference: they were equally good/bad. I did get consistent beacons from VY0ERC, though (probably the most northerly located amateur radio club in the world). But since there are only a limited number of WSPR stations on 20 meters I decided to switch to monitoring JT65 stations for the next comparison.

I had another CB whip laying around and after gutting it and adding two 5 meter radials I put it up in the far end of the garden. Now our garden is only 10 meters deep, but at least it is at some distance from any noise source in our house and the neighbours.

This time I only tested for 10 days, but again I didn’t notice much difference. Even though the rooftop vertical was noisier it would still receive all the JT65/JT9 stations the garden vertical could receive. It was only that I wandered up into the SSB portion of the 20 meter band that I noticed a difference. Comparing stations from Hong Kong, Japan and central Russia was like comparing night and day. Night being signals barely coming out of the noise, day being comfortable copy. The final confirmation came from my Olivia friend Ken in Japan. He calculated an +18 dB advantage of the garden vertical over the rooftop vertical during our most recent QSO.

So part 1 of our Antenna Summer has been a success in the fact that I now know that the garden is a better place for an antenna than the roof top. Less noise, stronger signals. But the question now arises: isn’t a metal roof a very good counterpoise and shouldn’t it be beneficial to the workings of antennas? Why does it degrade the performance of my rooftop vertical?

Hans "Fong" van den Boogert, BX2ABT, is a regular contributor to AmateurRadio.com and writes from Taiwan. Contact him at [email protected].

In this episode of Linux in the Ham Shack, topics include 630-meter operation, Boy Scouts in West Virginia, slow scan television via the ISS, supercomputing, Linux on your laptop, interesting ham radio projects for Linux, running Windows applications on Linux and much more. Thanks for tuning in, we appreciate it!

73 de The LHS Crew

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.TV Episode 106 is now available for download.

Field Day At The W5JDX and Ozone Shacks. Peter mods his BitX transceiver. Emile at the Jupiter Light House. And an old school Megger.

1:12:41

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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].