QRP To The Field (QRPTTF)

The QRPTTF event yesterday was way more fun than I had envisioned. The theme of the event was "Happy Trails" with the idea to operate QRP from or near a historic trail. Also included as a muliplier in the event were SOTA  qualifying summits. While I know there were several "Trail" stations out there, the summits seemed to dominate. I was able to work 21 summits during the event for over 100 chaser points. All of these QSO's within a couple of hours time. My rotor was getting a workout as the activity was coast to coast. I was even able to work 3 summits in Europe as well, all operating QRP. Lots of fun.

If you missed the event or just wondering what it's about, this is the link to this years event, http://www.zianet.com/qrp/qrpttf/2013.htm

Happy Trails (and Summits) to  you.

Mike Crownover, AD5A, is a regular contributor to AmateurRadio.com and writes from Texas, USA. Contact him at [email protected].

JT9 and 100 Hz ghosts

Multiple decodes at 100 Hz spacing of K1JT
on 30 m on 28 April 2013, 0101 UTC

From time to time I receive duplicate ‘ghost’ decodes at 100 Hz intervals on either side of the main signal. Last night I saw the phenomenon on 30 m. You will notice here that I have decoded the message: “TNX 73 GL” four times (press image for better readability):

  • -24 dB, 1063 Hz
  • -19 dB, 1163 Hz
  • -8 dB, 1263 Hz
  • -18 dB, 1363 Hz
The actual contact took place at the frequency of the strongest one, 1263 Hz. The station is only moderately strong at -8 dB and at +/- 100 Hz the first sidebands are 10-11 dB down and at -200 Hz the second one is 16 dB down.
In the post “Ghosts on JT9-1” Julian, G4ILO speculated that it had to do with strong signals. His best example showed a very strong example with signal strength as high as 19 dB and with the +/- 100 Hz ghosts 37-40 dB down, much more than in my example. A commenter proposed that it had to do with the mains frequency and that a North American station should have ghosts at +/-120 Hz instead. 
In his second posting, “Ghostly signals“, Julian did some tests and found that a mains power supply can indeed result in weak 100 Hz sidebands. Then it was commented on the wsjtgroup that in the US people see these ghosts at a spacing of 120 Hz and that tests suggest that they are generated at the transmitter end.
But my example is from a US station, and the ghosts are still at +/- 100 Hz, so that theory does not seem to be right. My example indicates that it has to do with the receiver and not the transmitter. It comes and goes and the relative levels seem to vary a lot. My guess is that it is 50/100 Hz that enters the audio signal between the receiver and the PC. The software was the latest v0.9, r3195.
And by the way, the US station in my example happens to be Joe Taylor, K1JT, the originator of the JT9 mode and the decoding software.


See also “Overmodulated JT65 on HF?


Sverre Holm, LA3ZA, is a regular contributor to AmateurRadio.com and writes from Norway. Contact him at [email protected].

TTF = FUN

It’s just about 11:00 PM and the day is almost done. It was a busy one!  After this blog post is finished, then I am finished too!  I will head upstairs to hit the sack.

The day started off with a visit to the Doctor’s office.  Nothing serious, just some blood work as my cholesterol was just a tad on the high side when I saw him last autumn,  He wanted a follow up visit in six months, and today was the day.  Before I left however, my lawn mower repair guy called and said my mower was fixed and ready to pick up.  That was good news; but I really wasn’t expecting it until Monday.

After getting my arm stuck at the Dr’s office, I came home for a quick lunch. Then I packed up the car with my radio gear and went to pick up the mower.  On the way home, I headed off to Thomas Edison Memorial Park for a few hours of QRPTTFing.  I was surprised when I got there.  This what the memorial tower usually looks like:

My surprise was that I knew the tower was being refurbished.  But for some reason, I thought all the work had been completed.  It turns out that so far, only the accompanying museum has been refurbished.  This is what the tower currently looks like.  It should be finished sometime later this year or perhaps early 2014.


And in accordance with the QRPTTF theme for 2013, I was only a block away from NJ Route 27, which is officially part of the Lincoln Highway, America’s first intercontinental highway – definitely an historic trail.

So I set off to one side of a side street in order to set up shop. I supported the PAR using my Jackite pole and my drive on stand. It was configured as a sloper.  I could have used a tree, I suppose, but I didn’t want to take too many chances. As it was, the lady who was volunteering to staff the museum today drove past me very slowly a few times to see what I was doing.  I explained in advance, but I guess she just wanted to be sure I wasn’t tearing up the place.
The drive on stand worked perfectly, by the way!  Thank you all for your many suggestions.  What I did was to buy an 8″ corner brace, which in plain English is an “L” bracket.  Instead of bolting it to both the vertical and horizontal boards, though, I only bolted it to the vertical board.  I secured the “L” bracket in place to the horizontal board by driving onto it! And it worked great.  It was a bit breezy, and throughout my operating time, only the very top section swayed and at that, just a tiny bit.  Set up and tear down literally took only a few minutes. (Perspective with the camera phone is lousy as I tilted it up a bit to get this photo. The Jackite was actually vertical and was not leaning towards the Jeep as the photo might have you believe. Guess I would have needed a view camera with swings and tilts to get it right.)
Another surprise was that after I drove off this mast support, and disassembled it to put it away, I was expecting to see the “L” bracket imprinted into the wood. After all, there was basically 1/4 of a Jeep resting on it. But oak is hard wood, indeed. Not even a mark.
I worked the following stations – thank you all!
AB9CA – Dave in AL
KIØG – Bob in CO- SOTA
WSØTA – NM – SOTA
AD4S – John in GA
WAØITP – Terry in IA
K4AHO – Jim in FL
WØEA – TJ in IA
K4UPG – Kelly in FL
AA4GA – Lee in GA
KX9X – Sean in CT (QST Contest Editor)
NØKIS – Bruce in NE
N4EO – Jerry in AL
WD4EXI – Val in GA
K4BX – Bill in AL
W9WKP – Steve in NE (WØOOW)
W2JEK – Don in NJ
W3KC – Chas in MD
Only 17 stations, but I had to end this effort and come home and mow the lawn.  Not being able to do it until now because of the malfunctioning mower, it was beginning to look like a jungle!  After I got that done, I made dinner for the kids and then went grocery shopping. Can you say, “Whew”?
I wanted to see if I could work some DX on 20 and 30 Meters tonight to keep my totals up in the Club 72 QRP Marathon, which only has a few days left.  Right now, I’m in 8th place and I’ve been bopping around in the 7th to 10th place neighborhood. I’d like to finish strong, if I could, but I was just too tired to even try tonight.  Maybe tomorrow.
Good night!
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].

QRP to the Field at Profile Falls

This afternoon Dick N1LT and I headed to Profile Falls in Bristol for the annual QRP to the Field event. What a perfect day we had… lots of contacts… dazzling scenery, even a little break for tea and cake!

rig

We set up right at the edge of the Pemigewasset River not far from where the Smith River enters the Pemi from Profile Falls. This year’s theme for the QRP to the Field event is historic trails. This spot fit in perfectly. There are TWO historic trails here. We were only several hundred yards from the old Northern Railroad route between Franklin and Bristol and just a little farther from the old road that ran between the two New Hampshire towns. Both have been out of service since the 1940’s when the Corps of Engineers took over the area for flood control.

We ran two separate stations. Dick set up about 70 feet from me. He operated in my VW camper with an FT-817 and a Par End Fed 40, 20, 10. I don’t have his log, but he worked a dozen or so stations on 20 meters in about an hour and a half of operating.

dick

As shown in the first picture, I set up on a picnic table in front of the river. I ran a K2 to a 21 foot piece of wire (half wave on 15M) tuned with an Elecraft T-1 tuner. I operated almost exclusively on 15 meters. The band was sparse, but now and then a strong station appeared and I was able to work him. Here’s my log for the event.

Date UTC Freq Call Mode MY His QTH Name
————————————————————-
27 Apr-13 1753 21.023 RA2FF CW 599 599 Russia
27 Apr-13 1758 21.061 AA5CK CW 559 599 OK Ted
27 Apr-13 1802 21.062 N7KE(?) CW 439 559 WA
27 Apr-13 1808 7.034 W2M CW 599 599 NY Morse event
27 Apr-13 1820 21.037 AA4PP CW 599 599 FL
27 Apr-13 1825 21.060 WT5RZ CW 229 559 NM Ron
27 Apr-13 1828 21.009 HB9BMY CW 599 599 SOTA
27 Apr-13 1830 21.029 WD4AHZ CW 599 599 FL
27 Apr-13 1833 21.033 F6FEA CW 569 599 France Didier
27 Apr-13 1920 21.034 K4LQ CW 599 599 FL
27 Apr-13 1925 21.017 I2TAO CW 559 599 Italy
27 Apr-13 1930 21.057 DF2GN/P CW 559 559 SOTA Germany Klaus
27 Apr-13 1937 18.073 WT0S CW 579 599 ND Don
27 Apr-13 1944 18.077 TM0SI CW 599 599 Sein Isl

It’s a mix of DX, SOTA, FL QSO Party and a couple of QRPTTFers. My QSO with Didier F6FEA in France lasted more than 20 minutes and I received a very cordial email from Didier. He was most patient with my weak signal!

About three quarters of the way through the afternoon we stopped for a quick cup of tea and some lovely orange cake that my wife sent along with us. I had brought along a gas stove, a pot, and some cups and plates. What a wonderful treat.

Before packing up, we went across the road to Profile Falls. It’s a popular swimming hole in the summer. A bit cold right now!

falls

Dick and I have operated this event together at least 4 years out of the last five. It’s something we look forward to each year with good reason. Thanks to Paul NA5N for putting the event together.


Jim Cluett, W1PID, is a regular contributor to AmateurRadio.com and writes from New Hampshire, USA. Contact him at [email protected].

SOTA Activation: Aspen Ridge (W0/SP-084)

Spring is finally coming to the Colorado high country so it was time for a SOTA (Summits on the Air) activation. I don’t know which idea comes first: let’s go hiking or let’s play SOTA. I suppose it doesn’t really matter.

I’ve had my eyes on activating Aspen Ridge, which is near our family cabin but I wasn’t sure if the road was open. It turned out to be an easy Jeep ride down Forest Service Road 185 to get close to the summit. Then a half mile hike around and over the occasional snow patch got Joyce K0JJW and me to the summit.

K0NR on Aspen Ridge IMG_1553

My portable station was a Yaesu FT-60 handheld and a couple of antennas. Shown above is my dualband Arrow II antenna with only the 2 Meter elements installed, resulting in a 3-element Yagi antenna. My other antenna is an omni-directional MFJ-1714 1/2-wave whip antenna, which is a little easier to handle for general use. Often that is the only antenna I bring along but this time I decided to add a few more dB of signal by using the Yagi. I also take along a Yaesu VX-8GR that pings my location on APRS (www.aprs.fi/k0nr-7).

After a few calls on 146.52 MHz FM, I worked KC8I in Woodland Park. A few minutes later, I caught Steve WG0AT operating from another SOTA peak (Mt Herman, W0/FR-063) for the QRP To The Field contest. A little later, I worked Ted N0ZPX who was fishing at Antero Reservoir, then N0VXE mobile near Salida and Ron N0MQJ in Ranch of the Rockies.

K0NR on Aspen Ridge IMG_1557

This photo shows the beautiful Collegiate Peaks in the background, with plenty of snow still showing. Needless to say, it is a gorgeous view from Aspen Ridge!

73, Bob K0NR


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

Kit build came to an abrupt stop

Last weekend I was working on my Elecraft K2 project all was going well until I tried to clean my Weller soldering tip in the wire sponge. For some reason it the wire sponge was not letting the soldering tip go. It was as if the tip was soldered to the sponge that was supposed to clean it! I did free the tip from the sponge and I tried to clean the tip once again and the same thing happened but it was even harder to remove from the wire sponge. I then took a closer look at the Weller soldering tip and half the tip was missing, it seemed to have come off. I never had this happen in the past with these tips and of coarse it was this tip that I did not have a spare of. I did pick up some new tips (4 of them) and will now be able to continue with my Elecraft
Wire sponge
K2 project once again. At one point I was using just a sponge that was damp to clean the tip's but I found this cooled the tips down and the soldering was affected. Has anyone out there ever had the problem of the soldering tips dissolving or breaking off in the wire sponge? The temperature on the Weller WES51 is set to around 800.

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

SCSmail using Robust Packet

After my post about using Winlink on HF using a Robust Packet Radio (RPR) TNC Helge DF8LS emailed to say he was trying out another method for email over HF: SCSmail. It sounded interesting so I thought I would have a go too. The software is a free download from the SCS website, but it won’t be any use without an SCS TNC – either the Tracker like I’ve got or one of the even more expensive Pactor jobs.

To install SCSmail all you do is create a folder for it, copy the downloaded EXE file into it and run the EXE. It will create some empty folders as temporary receptacles for your mail.  Next you need to set the program up. This is accomplished by entering the name and login credentials of your POP3 and SMTP servers at your ISP or mail provider. You also provide the details of where to find your TNC (what com port and so on) and can also set up CAT control for setting the transceiver frequency. I used the Kenwood setting which worked fine with the Elecraft K2 to which my TNC is connected.

SCSmail mail client configuration

SCSmail can be configured either as a client or a server. A client is what you will use to send and receive mail and is what I set up. A server is what your client connects to via radio. I used a server set up by (I guess) SCS.

The setup is:

your email client (such as Outlook Express) -> SCSmail client -> SCS TNC -> your radio transceiver —>  the ionosphere —> server transceiver -> SCS TNC -> SCSmail server —> the internet -> your ISP mail server

One advantage of SCSmail is that you can use your own familiar email client (such as Outlook Express) instead of an unfamiliar one like RMS Express. You can also use your own email address instead of having to use a special one @winlink.org. But you pay a price in speed for this.

To reconfigure your mail client to use SCSmail you simply change the addresses of the incoming and outgoing mail servers (usually something like mail.yourisp.com) to localhost. You can then send and receive mail just as you would normally. This is obviously an advantage if you are setting up an HF mail system for people who don’t want to learn a new way of doing things.

Receiving mail using SCSmail

What happens is the client logs in to your ISP mail server via the radio link to the remote SCSmail server. The first time, it downloads and deletes all the mail from the ISP server so it is a good idea to make sure your inbox is empty before you start. SCSmail supports a list of servers that you can connect to, but none is provided with the program. There is only one server you can use with Robust Packet Radio and that is DB0UAL-9 which uses 3.610 and 14.102 MHz. Having entered the server’s call and set your transceiver to one of those frequencies you click on Connect HF-Server. Then you set Outlook Express to send and receive mail and wait until the client disconnects.

I connected instantly to the server on 20m using 10 watts to my attic dipole. But compared to Winlink’s RMS Express SCSmail is slow. This is probably the penalty for using protocols designed for use on the wired internet over a wireless HF link. Winlink and RMS Express are optimised for HF use. RMS Express creates efficient small text mode emails whereas Outlook Express creates messages that can contain lots of fancy formatting and unnecessary header lines which increase the time to send and receive.

It all worked (or mostly did: the test emails I sent myself and Helge still haven’t turned up.) If I owned a boat or a log cabin miles from the nearest telecoms provider I might find SCSmail a useful facility to have. Even though I haven’t, it was still an interesting thing to try out.


Julian Moss, G4ILO, is a regular contributor to AmateurRadio.com and writes from Cumbria, England. Contact him at [email protected].

Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter

 
We never share your e-mail address.


Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on AmateurRadio.com!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!


  • Matt W1MST, Managing Editor