AmateurRadio.com

I added a bungee cord on each end to prevent damage from the radio accidentally falling off the table.

The cord does not touch the buttons.

View from the back

All in one, QRP seat, table,  umbrella and antenna anchor! The bottle on the table is bug spray! LOL

 

The table is a cutting board attached to the existing shelf.

The cutting board is bigger than the existing shelf, so I have more room for logging and a sturdy place to attach the antenna!

A bungee cord takes up the slack from the antenna in the wind. In a real world test, I found that one radial is all I need.

I tried an experiment, adding two, then four radials. There was no detectable change in signal level by ear on or the S meter.

One radial did the trick, and 4 radials didn’t improve the signal at all.

 

Note the guy ropes. This is to hold the chair in place. The golf umbrella is stuffed into  a piece of PVC pipe.

The PVC pipe is tied to the chair with cable ties.

Wind and the antenna pulling on the table would easily turn the chair over.

Satisfaction! I can’t wait for the next ham radio outing with my QRP buddies.

Ernest Gregoire, AA1IK, is a regular contributor to AmateurRadio.com and writes from Florida, USA. Contact him at [email protected].

The last class of our Technician License course was held last night. We had what I guess you could call a review session.  Drew W2OU provided me with two practice exams, which I printed out and distributed to the class members.  We treated last night as the actual exam session. So not only did they get practice, but they also now know what to expect for next week.

After each exam was completed, we went over the tests together as a group.  It appears that on both exams, no one got more than six answers incorrect.  Since a passing grade allows for nine incorrect answers, it would appear that we are looking at a bunch of new Amateur Radio ops as of next Tuesday night.


To break things up a bit, we showed an Amateur Radio video in between the two exams. In all, I thought last night's session was exceptional. Our class members have proven to be eager, bright, inquisitive, and open to what we have been presenting to them.

It has been an honor and a privilege to work with them, as well as with my two fellow instructors, Marv K2VHW and Drew W2OU.  These two are amazing Amateur Radio ops and have an amazing amount of experience behind them.  The fact that Marv K2VHW is a retired broadcast engineer from WABC with a couple of Emmy Awards under his belt doesn't hurt, either!

I am looking forward to next week, and I just sent the group a final e-mail, detailing what to bring next week and basically telling how proud of them that we are. It's great to be able to help increase the ranks of Amateur Radio.  I also reminded them to relax. This is supposed to be fun, and besides, in the scheme of things, it's not like we're looking to cure cancer or end world hnger.

Oh, and by the way, I did work John K4BAI in Georgia, one of the 40 Meter Foxes last night.  I tried to work Kevin W9CF in Arizona, but I think the good props between NJ and AZ were over by the time I got home and wolfed down dinner. I see from his Fox log that Kevin worked some NJ stations, but that was while I was still in class.  By the time I was trying to work him, he was 229 - 339 at best and I just couldn't make myself be heard. There is nothing more frustrating than calling a station who is sending a CQ in the clear, only to have them resume calling CQ after you send your call!

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].

A few days ago I received an email from Jack (VA7JX) letting me know that his "U3"project was now complete. You may recall Jack's helpful list of tips regarding the use of SMT components and correct soldering techniques in an earlier blog....well worth a read if you are contemplating a start in SMT construction.

The "U3" is the Ultimate3 QRSS/WSPR Transmitter Kit produced by Hans Summers (GØUPL) and is fast becoming a popular and inexpensive workhorse among WSPR fans. A short description from GØUPL's website indicates that the "U3" is:

"the third version in the "Ultimate" QRSS/WSPR kit trilogy. It can produce QRSS, Hell, WSPR, Opera and PI4 slow-signal modes anywhere from audio to 10m and above. Plug-in LPF filters are available for all 12 HF/MF/LF bands."

Jack has tailored his version for our new (to Canadian amateurs) 630m band but has also added a versatile MOSFET linear amplifier of his own design that runs on 12VDC. Using an inexpensive IRF540 switching FET, Jack can run up to 30W of output on 630m but normally runs at the 5-10W level on 475 kHz. Most of Jack's homebrew gear looks as if it just came off the Hewlett-Packard assembly line and his latest project is no exception.

All images courtesy of VA7JX

Using mainly the WSPR (Weak Signal Propagation Reporter) mode, Jack and many others, have found that 630m offers some amazing propagation, considering the low ERP levels imposed by the backyard-sized antenna efficiencies on this band. Using an inverted "L", resonated for 630m, his 5W signal has been spotted by the following stations in the past few days:

          WH2XCR (Hawaii) at 4258 km.
          WG2XJM, 3552 km, Shawnee, OK
          WH2XHY, 2822 km, Fitchborg Wi.
          WG2XXM, 2789 km, Wichita Kansas.
          N6KOG, 1390 km, Tracy Ca.
          KK6EEW, 1284 km, Healdsburg Ca.
          WE2XPQ, 1172 km, Alaska
          W7LW, 983 km, Kuna, ID
          W7MY, 605 km, Richland WA.
          WH2XGP, 504 km, Quincy, WA

VA7JX is one of the three west coast Canadian stations that have transmit-capability on 630m, the two others being myself and VE7BDQ (John). John can be found most nights on the 475kHz WSPR mode as well, running the legal limit of 5W EIRP into a small inverted "L" as well. John has also enjoyed good success on WSPR, having been spotted regularly on the east coast and more recently, in Hawaii. For exact frequencies of both stations, check the WSPRNet Activity page for the latest real-time information.

Although WSPR works well as a propagation indicator....and it seems that there is plenty of nice propagation on 630m....it does not allow two stations to actually QSO each other. Our new band really needs more Canadian stations to spark activity and get things rolling! Ideally, it would be nice to call CQ on the band, with a realistic hope of getting a reply.

With three VE7's now 'all-ears', nightly activity from VE6, VE5, VE4 and VE3 would be an exciting prospect and would really liven-up what seems to be a very prop-friendly part of the spectrum...who'd a thought it? It seems that amateurs are now re-discovering what the maritime operators have known for decades!

If any of us can help you with getting on-the-air, please do not hesitate to ask....and, if you are presently building or testing, you can look for your signal on the VA7JX 630m screen grabber....a real-time view of the band from VE7 land and available any time, by chance or by request, from VA7JX.



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

AmateurLogic.TV Episode 72 is now available for download.

Tommy makes a TNC Pi APRS Igate. George talks about RF Wattmeters. Peter’s introduction to Python programming.

1:17:26

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].

On the internet you can buy a dual-band handheld with antenna, battery, chargers(2), earpiece and belt clip for just £25.29. At this price I find it unbelievable they can make a profit. I think it is even cheaper if you buy a batch of 3.
 .
See http://www.banggood.com/LBaofeng-UV-5RA-Yellow-Dual-Band-Transceiver-Radio-Wakie-Talkie-p-947385.html  .

Shipping is just 29p. shipped to the UK by registered air parcel. It is available in a variety of case colours.

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

W5OLF WSPR beacon – complete – no PC needed

This WSPR-AXE really is a very impressive little rig, in my case for 10m WSPR.  Because of my current disabled state –  I find all electronics building just about impossible – Jay very kindly sold me a built unit to evaluate. Results in just a few hours of operating have been truly impressive. No PC is needed as long as the push button is pressed at the start of an even minute. Jay says it stays stable for weeks thereafter. I ran mine for 3.5 hours and got masses of decodes. After lunch it has been getting LOTS of spots from the USA. I am sure it will reach Australia soon.

The unit needs about 15 minutes to frequency stabilise and after that it always on, but it randomises the slots within the WSPR transmit window. This means it is unlikely to be “clobbered” by more powerful stations or cause others co-channel issues.

Best DX report (so far) today is FR1GZ (9724km).

10m WSPR – unique spots with the W5OLF beacon today, arranged by distance

If you want to buy one Jay W5OLF may be contacted on [email protected]t .

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

Tonight is the beginning of the 2014/2015 QRP Fox Hunt Season. Yay!



Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].