Chameleon F-Loop inside testing

I started testing the F-Loop inside the house on the kitchen table because it has again gotten cold out with 45km.hr winds, and -19c with windchill. So I set up the CHA F-Loop on the table, FT-817 and WolphiLink TNC to the Samsung tablet using WSPR and decided to test. I tested last night on 20 meters with the 36″ aluminum radiator loop on and thsi is what I got:

Was heard in Alaska and into the USA, I was running about 3 watts before I set the Wolhpilink transmitter levels up to proper settings.

So once I set the drive level and receive levels the FT-817 was running perfect with WSPR.
I did some tests on 20 meters. 17 meters with much of the USA being heard, so I switched to 15 meters and turned the loop so that the radiated sides were transmitting east and west, the results are seen below:

So good results considering my house is finished on the outside with stucco plaster which means it has mesh steel wire all the way around and then finished with the stucco.

http://www.chameleonantenna.com

http://www.wolphi.com/interface/

Fred
VE3FAL


Fred Lesnick, VE3FAL, is a regular contributor to AmateurRadio.com and writes from Thunder Bay Ontario, Canada. Contact him at [email protected].

QRPTTF 2015 – First Announcement!


Living in New Jersey makes filling the requirements of this theme a snap!

Right off the bat, I'm thinking that I could go to Johnson Park in either Highland Park or New Brunswick and operate right on the banks of the Raritan River, which according to Wikipedia:

"The river has served an important water transportation route since the Pre-Columbian era. The name Raritan is also applied to the Raritan people, an Algonquian tribe that inhabited Staten Island, near the river's mouth."

Or perhaps I could go over to Piscataway Township and operate from there:

"The name Piscataway may stem from the area's original Native American residents, transplants from near the Piscataqua River defining the coastal border between New Hampshire and Maine, whose name derives from peske (branch) and tegwe (tidal river),[18] or alternatively from pisgeu (meaning "dark night") and awa ("Place of")[19] or from a Lenape language word meaning "Great Deer".

Or, I could even go to one of my favorite spots, Washington Rock State Park, as it is on the first ridge of the Watchung Mountains, which according to Wikipedia (again):

"The original inhabitants of the Watchungs, the Lenape, referred to the mountains as the Wach Unks, or ‘high hills’.[9][10] Evidence of the Lenape presence in the Watchungs can be seen in numerous camps sites that have been uncovered, mainly along the rivers coursing through mountains and in the small caves abundant in the volcanic rock. It is thought the Lenape favored the Watchungs for their profusion of natural resources, including abundant freshwater rivers and streams, a variety of forests, and plentiful fish and game.[11] They also took advantage of the rich soils and maintained many farm areas where they raised a variety of seasonal crops."

So I have plenty of places to choose from. Sometimes the themes that Paul comes up with can be somewhat of a challenge - for example, last year's "Cinco de Mayo" theme. There's not much in New Jersey that has a true Mexican connection.

This year's theme is pretty easy to comply with.

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].

LHS Episode #143: Erin Go Bragh

erin-go-braghIt's another lonely episode without Pete. We're still not sure if he was eaten by a bear or not, but we hope he's well wherever he might be. In the meantime, we put together what we hope is an enjoyable and informative episode with information on Yaesu System Fusion, bluetooth configuration in Linux, the LXLE distribution, PyQSO and more.

73 de The LHS Guys


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].

Yes, I am a bit of a wimp

It's raining outside, so I haven't gone to the Jeep for any lunch time QRP. In fact, I didn't bring the radio with me at all today. Yes, I will confess, I am a bit of a weather wimp. I hate setting up antennas (yes, even the Buddistick, which is a snap) this time of the year in the rain. Not a big issue for me in the late Spring or Summer, when it's warm. But when it's raining this time of year, it just feels raw - colder than it is, even if it's a bit warmer than it has been.

So I've been spending my lunch hour writing this post and Googling "Field Day Wire Antennas". Last year's EARCHI EFHW (Emergency Amateur Radio Communications Hawaii End Fed Half Wave) and G5RV both worked well, and more than likely, we are going to use them again. However, we have decided to add a digital station and a GOTA station, so we need to come up with two more wire configurations.

The digital station will be W2OU's FT-817 and I believe we are using KD2FSI's FT-897. Both W2OU and I have PAR END-FEDZ 10/20/40 antennas. While easy to deploy and use, they would prohibit us from getting on 80 Meters and 15 Meters. I am considering as possibilities, the G7FEK or perhaps the D3+ antenna. Both seem somewhat easy to construct.  As the weather gets warmer, I may have to build one of each and then take them to the local park to see (in reality) how easy they are to set up and what kind of results I can garner.

K2VHW has a few disassembled multi band yagis in his garage. If he can determine that he has all the pieces and parts, we broached the concept of perhaps deploying one using an extension ladder as a "tower". That would make life a little easier for the QRP SSB guys.

My goal is to keep things as simple as possible while still allowing us to get credible results. After being out in the field for 24+ hours (if you include set up), no one really wants to face the prospect of spending an enormous amount of time tearing everything apart.  Come 2:00 PM on Field Day Sunday, my mind is more on a good meal and a hot shower than worrying about packing and stowing.

We have ample time yet, so more investigation seems likely.  Now if only I can find my copy of Bill Orr's "Simple Wire Antennas". That would help immensely!

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].

I am now the Chairman of a radio club!

Firstly my apologies, last weeks post about the Eggciting Eggsplorer-1 HAB project and the talk and demonstration on SSDV wasn't posted on Amateurradio.com due to an error.

This week South Kesteven ARS (SKARS) held an EGM where I was voted on as the new Chairman. Nigel Booth M0CVO has stepped down following four years in the position citing increasing business commitments. Nigel intends to remain an active member, I and the other members wish to thank Nigel for his efforts over the years and wish him well with his business ventures.

SKARS has a small membership at present which we hope to increase but the committee finds itself in the  Catch-22 position of not having a lot of funds in order to put on activities and promote ourselves to increase the membership.

I have created a social media presence in the form of a Facebook page and twitter account in addition to updating the societies web page.I am hoping that permission willing the GB2EGG and Eggsplorer-1 project will significantly promote the society and the hobby.

I know running a club/society isn't a trivial undertaking, especially if working full time having chaired a large dog agility training club many years ago. It can take a lot of effort and time and it can sometimes be a thankless task.

Indeed my first twenty-four hours has Chairman saw my first sacrifice, a lovely Yaesu FT-450D was delivered yesterday and I have yet to take it out of the box!

 
Something to be remedied this evening.

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

OFCOM plans for the year ahead

See http://www.ofcom.org.uk/content/about/annual-reports-plans/ann-plans/Annual_Plan_Statement.pdf .

Sorry, but this CRAP shows what OFCOM plans are for the year ahead. In an executive executive summary (mine) I would summarise this as,”continue to be a bureaucratic quango”.

It looks like it was written by a young, overpaid, headless chicken. Lots of “informed choice” and similar buzz words. Rubbish in my view. No-one there seems to be able to make decisions based on the use of a brain and common sense.

Give OFCOM some real power and let them make common sense decisions. My recent discussions on VLF/LF experiments are just an example of their total inability to think “out of the box”. Sorry, but as an OFCOM “customer” I am left very unimpressed.

Opinionated, me?


Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

A 630m QRSS Test

A few days ago, the power of the slow speed QRSS mode was nicely demonstrated by Mark, VA7MM (Coquitlam, BC) and Jack, VA7JX (Campbell River, BC, on Vancouver Island).

Mark was transmitting on 630m at a power of just 144mW output, while Jack was receiving on his normal 630m inverted 'L'. Mark tried various QRSS speeds ranging from QRSS3 (3 second 'dits') to QRSS60 (60 second 'dits'). One can clearly see the difference between the three speeds.

Going from the relatively slow CW rate of 6 WPM to just QRSS3 alone, produces a healthy 12db increase in signal level. Going from there to QRSS10 produces another 5db, while going all the way to QRSS60 produces a whopping 24.8db over 6 WPM CW! The trade off, of course, being the amount of time it takes to send the needed information.

In practical terms, contacts can be made relatively quickly at both QRSS3 and QRSS10. After that it becomes a bit of a chore as conditions need to be very stable for long periods of time ... as well, you'll need several hours to complete a two-way exchange.

courtesy: https://www.google.com/earth/

VA7MM - QRSS3



VA7MM - QRSS10
VA7MM - QRSS60
This is over a 120 mile (192km) path but what is remarkable is the rugged nature of the path as shown here:

courtesy: http://www.heywhatsthat.com/profiler.html
Although mostly over water for the second portion, the initial launch of Mark's signal is into a hellish 60 mile path of rugged coastal mountain peaks, with most of them in the 3,000 - 4,000 foot range! If this is an all groundwave path, and I suspect that it may be, it surely demonstrates the amazing groundwave capability of 630m. If there were any skywave involved, I would expect to see some fading on the signal path ... but the QRSS60 signal looks rock-solid and fade-free.

I should add that Mark's transmitting antenna is very minimal at the moment, consisting of an 80m dipole fed as a vertical 'T', tuned but not impedance-matched and ... no ground radials. Pretty remarkable actually.

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

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