A slight change of plans…..

The test setup 
I was out today once again with my portable operations but this time there was no on air time it was time to test and decide. I went out with my MFJ antenna analyzer, mobile whip antennas and various lengths of counter poise. I wanted to see where my 20m mobile whip antenna was resonant and using the MFJ analyzer was the easiest way of doing this. The counter poise for 20m I started with was 17.5 feet long and the SWR was not showing it was resonant in the CW portion of the band but in the SSB section. So I found I have to lengthen the counter poise to 30 feet to get the SWR to 1.2:1 in the CW portion of 20m. This got me to thinking if the mobile whip was the way to go, I did have these antennas hanging around and I wanted to give them a go to see what results I would get. They are still very useful to me when I operate portable mobile from the car and they preform very well in that situation. I wanted to try the whip  antenna as I felt it would be a very small footprint of an antenna but with a counter poise of 30 feet the footprint is larger than I would like. From most of my blog reading about portable trail operation, NPOTA operations and just plan old out in the park for the day operation hands down most of the time the antenna of choice was one of LNR's par end fed antenna's.   I have looked over the antennas at LNR Precisions site and not sure yet which antenna to get, I am leaning toward the EF-20 as it's not as long (33') as say the other models. I'm really not going to use 40m and I figure (but not sure) I can use the Elecraft KX3's tuner to operate 15 and 10M?? Any feedback about this antenna or others would be appreciated.

Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

Amateur Radio Weekly – Issue 114

2016 Hamvention attendance up slightly?
General chairman of the event said attendance this year may have been up slightly from 2015.
ARRL

Can we use a Raspberry Pi model B as FreeDV modem?
I am going to try using them as a headless FreeDV modem similar to the SM1000.
OZ9AEC

6 meter collinear antenna
I like to keep my antennas simple and cheap by using wire as the basis for everything.
High on Solder

Shield Hat: Signal Proof Apparel
It has shielding effectiveness 55dB-65dB from 10 MHz to 4 GHz. Silver is also antibacterial, antimicrobial, antiodor and antistatic.
Shield

Custom 19″ cabinet for a portable repeater
A 19 Inch rack mount is a standardized frame or cabinet for mounting equipment modules.
NT1K

How is Amateur Radio in your country?
European Radio Amateurs’ Organization’s survey wants to determine the current status of amateur radio in your country.
ERAO

Adventures with software defined radio
The SoftRock RXTX Ensemble seemed highly respected and has been available long enough to develop a good user base.
M0SPN

Video

NPOTA Activation: Expect the unexpected
W3ATB shares his NPOTA activation of Saint Gardens (NS60) in New Hampshire on June 1, 2016.
W3ATB

KD2GTM’s Hamvention Recap
All about my experience at my first Hamvention!
KD2GTM

The Transistor: 1953 documentary, anticipating its coming impact
The intent of the film was clearly to give the public of that era their first understanding of what a transistor was and why it mattered so much.
AT&T Tech Channel


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.

AmateurLogic 91: Hamvention 2016 – Part 1


AmateurLogic.TV Episode 91 is now available for download.

Part 1 of Tommy and George’s Hamvention 2016 adventure. Recorded before a live audience at the Icom booth on Friday, May 21st.
Fishing Tales with Darth?
Michael Kalter, W8CI on what’s new at Hamvention.
Don Kunst, W3LNE, Boy Scouts K2BSA VP.
Arthur Kunst, W3WM has some great stories about his 76 years in amateur Radio! You don’t want to miss this.
Valerie Hotzfeld, NV9L and Bob Heil, K9EID join us and talk about Ham Nation and their passions for the hobby.

It’s a bonus episode of AmateurLogic. Look for part two coming soon.

1:08:10

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].

Magic Band And The DX Window


Late May and early June always sees 6m come to life ... sometimes slowly and sometimes with a 'bang'. Last year's good early start soon flickered-out into what was the poorest sporadic-e season that many could recall. This year's 'start' has almost been a no-show, with just a very few short openings to the south eastern states (Colorado, Utah) and one 'blink and you've missed it' opening to the Great Lakes.



Hopefully the 6m propagation gods are just having some fun with us and things will really spring to life shortly. Once we do get into some periods of good propagation, there are always new arrivals to the band, as most transceivers these days include the 6m band. Every season I hear of newcomers getting their knuckles wrapped for, probably unknowingly and in all innocence, operating inside the 'DX Window'.

If you're new to the band or perhaps not sure how the window should work, here's a short section taken from my Magicband web page, that explains the concept:

Don't Be A 'DX-Window' Lid! 

One of the quickest ways to get the 6m community saying nasty things about you behind your back is to mess-up in the DX Window. The DX Window (50.100 - 50.125 kHz) has long been established for one type of contact only, that being a legitimate DX QSO. 


The DX Window can only be of value if everyone follows these basic 'rules': 


If you are in the U.S.A. or Canada, DO NOT WORK ANY OTHER U.S.A. or CANADIAN STATIONS INSIDE THE WINDOW. The window is NOT for North America - North America contacts. 


Do not answer the "CQ" of U.S.A. or VE stations if you are in North America. This creates unnecessary QRM and chances are, they will not respond to your answer anyway. Calling or answering other North Americans in the DX-Window only reinforces bad operating habits, encouraging newcomers to do the same. If you want to work U.S.A. or CANADA, do it outside the DX Window! 


Work or call only stations outside of North America inside the DX Window. 


The only legitimate exception to these rules, that will not get you in the naughty-corner, is working a KL7, VE8, XE or some other such fairly rare North Americans. 


I hate to say it, but some of the worst offenders to the successful function of the DX Window are my fellow VE's, many of whom don't know or don't understand the simple concept of how it works. Now that you know, pass it on! 


Now, you may or may not agree with the concept of a DX window, so please don't shoot the messenger. What I do know however, is that if everyone does their best to adhere to the window's concept, it works well. Problems arise when those that should know better, and probably do, decide that for some reason, the concept doesn't apply to them or that it won't hurt, 'just this once'. Others, particularly newcomers, see it and think it's all OK and soon the window is full of domestic QSO's, effectively killing its usefulness.

As conditions slowly improve, hopefully we can work on six this summer. I usually hang out on CW, just below 50.100. As one long-time 6m diehard would often say to me, the newcomer over 40 years ago ... 'We'll see you, all of a sudden!"


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

Walter Winchell

I was meandering around the web this morning and stumbled on to a page where famous key collector and curator Tom Perera W1TP had re-created the morse key setup used by Walter Winchell to introduce and punctuate his radio and later TV broadcasts. They were a pair of Vibroplex bugs.

The Vibroplex ‘Lightning Deluxe’ and ‘Original’ bugs
The Vibroplex ‘Lightning Deluxe’ and ‘Original’ bugs

I grew up in Sydney in the 1950s and remember how radio station 2UE would start their news bulletins with a brisk CQ CQ. They were probably inspired by Winchell. Another memory is watching ‘The Untouchables‘ on TV with narration by Walter Winchell.

It’s worthwhile reading Walter Winchell’s Wikipedia entry while you listen to and occasionally watch an archived TV show of his from December 1953.

The Walter Winchell Show 13 Dec 1953
The Walter Winchell Show 13 Dec 1953

Ironically in his early years as a gossip journalist he was close to prominent criminal identities and later became friends with J. Edgar Hoover. He was Jewish and in the lead up to the second world war was one of the first Americans to criticise Hitler and those in the US who supported him. Another of his targets was isolationist Charles Lindbergh. His fame followed his reporting the famous kidnapping and subsequent trial.

From the clip you can hear the rapid-fire delivery. In many ways it’s like a precursor to much of what we consume today.

Walter Winchell reporting – from a brilliant site about old mics – coutant.org
Walter Winchell reporting – from a brilliant site about old mics – coutant.org

He attacked the Klan and its supporters. After the war he aligned himself with the Senator Joe McCarthy’s hunt for communists. But within this short clip there are a couple of places where he briefly questions a couple of issues that were to haunt the US for the next couple of decades – Vietnam and cigarettes and cancer.

Complex and probably unattractive, what I want to know is if he actually knew how to handle those Vibroplex keys.



Having fun on the "Magic Band"

In April I installed a second-hand HB9CV for 6m, primarily for use in the UKAC VHF contests but I hoped to use it during the upcoming sporadic 'E' season.


Still a relative newcomer to the hobby (only licensed at end of 2013) I had little experience of the 50MHz/6m band and have been mostly met with static whenever I did turn the dial to have a listen but happily that has changed in the last few weeks.

I knew that 6m can be an interesting, unpredictable almost unique band.  Being at the lower end of the VHF spectrum it exhibits the usual characteristics of VHF communication, mostly short range line-of-sight contacts since 50MHz is usually well beyond the maximum usable frequency (MUF) for normal 'F-layer' ionospheric propagation utilised by the lower bands. However solar activity and other factors can trigger other types of propagation, in fact the band can support just about every form of propagation possible and is the main reason why it has become known as the "Magic Band"

One interesting form of propagation is sporadic E, or popularly referred to as Es. Small clouds of unusually ionised atmospheric gas form in the lower E-layer of the ionosphere (located at altitudes of  90 to 160 km). These clouds 'bounce' the radio waves allowing long-distance communication at VHF frequencies, sometimes multiple hops are possible giving extreme DX. One advantage of sporadic E over other forms of propagation is that it allows low-power QRP communication. As its name suggests, sporadic E is not a normal occurrence but can happen at almost any time. It does display a seasonal pattern with activity peaking in the summertime most noticeable in mid-to-late June.

I had turned the antenna to the East and have been running WSPR on and off over the last month on 6m with no luck, just the odd spot from the UK. I was in the shack one Saturday evening and was tuning around on 6m and heard some Italian stations calling CQ on SSB. I tried my luck and answered (using 50W) and was amazed to be heard, working a couple of stations in quick succession then suddenly the opening closed mid contact with another station. I was hooked!

Over the past few weeks I have caught a few more openings and have managed to work (in no particular order) Latvia, Croatia, Lithuania, Slovenia, Czech Republic, Slovakia, Serbia, Italy, Germany, Switzerland, Poland, France, Spain, Austria, Canary Islands and Finland - using a combination of voice on SSB and the JT65 digital mode.

Using JT65 has been particularly interesting since it allows me to 'remote operate' from work otherwise I would miss most of the 'Es'. Being able to monitor the waterfall and see the signals gaining and falling in strength during the minute long transmission is particularly fascinating.

Using the PSKReporter website I can see the location of all the stations I could hear and was being heard by. This map shows activity over the couple of hours on the 26 May using just JT65.


I have joined the UK Six Meter Group (UKSMG) to find out more about this "magic band" and their website is full of lots of information and resources along with the magazine Six News for subscribers.



Andrew Garratt, MØNRD, is a regular contributor to AmateurRadio.com and writes from East Midlands, England. Contact him at [email protected].

Having fun on the "Magic Band"

In April I installed a second-hand HB9CV for 6m, primarily for use in the UKAC VHF contests but I hoped to use it during the upcoming sporadic 'E' season.


Still a relative newcomer to the hobby (only licensed at end of 2013) I had little experience of the 50MHz/6m band and have been mostly met with static whenever I did turn the dial to have a listen but happily that has changed in the last few weeks.

I knew that 6m can be an interesting, unpredictable almost unique band.  Being at the lower end of the VHF spectrum it exhibits the usual characteristics of VHF communication, mostly short range line-of-sight contacts since 50MHz is usually well beyond the maximum usable frequency (MUF) for normal 'F-layer' ionospheric propagation utilised by the lower bands. However solar activity and other factors can trigger other types of propagation, in fact the band can support just about every form of propagation possible and is the main reason why it has become known as the "Magic Band"

One interesting form of propagation is sporadic E, or popularly referred to as Es. Small clouds of unusually ionised atmospheric gas form in the lower E-layer of the ionosphere (located at altitudes of  90 to 160 km). These clouds 'bounce' the radio waves allowing long-distance communication at VHF frequencies, sometimes multiple hops are possible giving extreme DX. One advantage of sporadic E over other forms of propagation is that it allows low-power QRP communication. As its name suggests, sporadic E is not a normal occurrence but can happen at almost any time. It does display a seasonal pattern with activity peaking in the summertime most noticeable in mid-to-late June.

I had turned the antenna to the East and have been running WSPR on and off over the last month on 6m with no luck, just the odd spot from the UK. I was in the shack one Saturday evening and was tuning around on 6m and heard some Italian stations calling CQ on SSB. I tried my luck and answered (using 50W) and was amazed to be heard, working a couple of stations in quick succession then suddenly the opening closed mid contact with another station. I was hooked!

Over the past few weeks I have caught a few more openings and have managed to work (in no particular order) Latvia, Croatia, Lithuania, Slovenia, Czech Republic, Slovakia, Serbia, Italy, Germany, Switzerland, Poland, France, Spain, Austria, Canary Islands and Finland - using a combination of voice on SSB and the JT65 digital mode.

Using JT65 has been particularly interesting since it allows me to 'remote operate' from work otherwise I would miss most of the 'Es'. Being able to monitor the waterfall and see the signals gaining and falling in strength during the minute long transmission is particularly fascinating.

Using the PSKReporter website I can see the location of all the stations I could hear and was being heard by. This map shows activity over the couple of hours on the 26 May using just JT65.


I have joined the UK Six Meter Group (UKSMG) to find out more about this "magic band" and their website is full of lots of information and resources along with the magazine Six News for subscribers.



Andrew Garratt, MØNRD, is a regular contributor to AmateurRadio.com and writes from East Midlands, England. Contact him at [email protected].

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