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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].

More on Project Diana

I found this interesting:

And this is  from the InfoAge Webpage concerning the project:

“In late 1945, in the lull that followed the Japanese surrender, a number of scientists at Fort Monmouth’s Camp Evans began working on a way to pierce the earth’s ionosphere with radio waves, a feat that had been tried just before the war without success and which many thought impossible.

Project Diana, named for the goddess of the moon, was designed to prove that it could be done. Begun on an almost unofficial level by Evans radar scientists awaiting their Army discharge, the project was headed by Lt. Col. John DeWitt. Operating with only a handful of full-time researchers, the project scientists greatly modified a SCR-271 bedspring radar antenna, set it up in the northeast corner of Camp Evans, jacked up the power, and aimed it at the rising moon on the morning of January 10, 1946. A series of radar signals were broadcast, and in each case, the echo was picked up in exactly 2.5 seconds, the time it takes light to travel to the moon and back.

The importance of Project Diana cannot be overestimated. The discovery that the ionosphere could be pierced, and that communication was possible between earth and the universe beyond, opened the possibility of space exploration that previously had been only a dream in adventure films and comic books. Just as Hiroshima opened the nuclear age in 1945, Project Diana opened the space age in January of 1946. It would take another decade before the first satellites were launched into space, soon followed by manned rockets, but Diana paved the way for all those achievements.

It even initiated the tradition of naming such projects after ancient Greek and Roman gods, like Mercury and Apollo. For Fort Monmouth Project Diana was a pivotal event that built on World War II expertise, but pointed the way to the future.”

Somehow, I have got to fit this location into either an upcoming QRPTTF or perhaps a cool theme for the 2014 Skeeter Hunt ……………

72 de Larry W2LJ
QRP – When you care to send the very east!


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

Field Trip

I've been slowly getting back into backpacking shape. Not only physically, (I recently had my annual physical and lasted 16 minutes on the treadmill test(faster and steeper every 3minutes), not bad for an old man), but also getting my equipment, both radio and packs, etc.., updated. So it was time for a real test to see what works and what doesn't as well as what I forgot to include.

So a few days ago, my son AB5EB, invited me on a backpacking trip with he and my two grandsons, Reid, KF5GYE and Boogie, KF5GYD, ages, 10 and 12 respectively. Well, of course I could go. Our destination was Lost Maples State Park in the Texas Hill Country. What a beautiful spot. We would hike 4 miles to one of the high points in the park, ~2,300 ft. elev., making a 550 vertical climb and camp for the night. The last 330 feet of the climb come in the last quarter  mile of  the hike, so it's pretty pedestrian until that point.

From the backpacking perspective, I planned pretty well. A lightweight MSR Nook tent served me well, however, my old 20 degree sleeping bag and Thermarest  pad need updating, lighter versions exist. My titanium alcohol cook stove and titanium cook pot worked great. One omission, I didn't bring any thing to sit on, so I need to get a Thermarest chair set-up that allows me to make a seat out of my sleeping pad, sitting on the ground gets old. I used to have one, but I have no idea where it is. One lesson that I haved learned when carrying everything you need on your back is to dual purpose your gear as much as you can. An example, for eating, I carry a plastic spoon and a coffee cup. If  I don't eat the backpacking meal from the bag, I use the coffee cup to eat from and I have very little clean up. While I didn't bring a trekking pole on this trip, I could easily  use one to mount the 13' pole on, after I figure out the adaptor issue. A trekking pole also works well as a base for the Buddi-stick vertical.

I would also say the radio set up worked as well. My main goal was to test the new 13' telescoping pole that I bought from SOTA Beams. I like this pole because it is much easier to pack in a backpack and it fits easily into a suitcase. Of course it's only 13'. I set it up on the $10 tripod that I use with my AlexLoop, that gives it another 4 feet or so. Both the telescoping pole and small tripod slide easily into the slot behind the sidepockets on most backpacks.



Telescoping Pole and Tripod
w/LNR Trail Friendly 10/20/40

I used two antenna configurations, the 40 -6 End Fed antenna from the Emergency Amateur Radio Club (EARC) in Hawaii, using the 31' wire they provide with the kit and the LNR 40/20/10 Trail Friendly Antenna. The results were hard to compare as I used each during different parts of the day and only on 20 meters. I did tune the EARC antenna on 15 meters, but the band was basically dead to me. I used the Elecraft T-1 tuner and the ATS-4B so matches were easy to find. I would say that the LNR had louder signals as you would expect from a resonant antenna. The trade off of course is that that EARC can be tuned on most any band. I managed to work both coasts with both antenna's so they both work. I will probably stick with the LNR for a short term SOTA activation, but the EARC might be good if I wanted to  try the higher bands for a little DX.

BTW, from a backpacking perspective, when carrying tent, sleeping bag, food and water, etc..., I deemed the AlexLoop to be too big to pack, at least for long hikes. I would have had to go to a bigger back pack to accommodate it. Day hikes, of course, are a different story. Now, if I had a goat or pack mule, that would create some opportunities to carry more as well.


Operating Position (No Chair)



I also employed my rigged up operating desk. I used a backpacking style cutting board and a couple of bulldog clips. I printed the log pages from a template found on-line and have some waterproof ink jet paper on order.

Operating Desk

It was a fun trip. Backpacking, enjoying the outdoors with my son and grandsons and playing radio. It doesn't get much better than that.

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

Show Notes #104

Episode #104 Audio (Listen Now):

Introduction:

  • Pete is back on the show along with Russ

Announcements:

  • Hamvention 2013 is happening May 17-19, 2013 in Dayton, Ohio. LHS reached the donation goal and thus will be in the Hara Arena. Thanks to Sierra Radio Systems for their incredibly generous donation that put us over the top. We will be talking with George from Sierra and Nick from Pignology in Episode #105. It’s a show you DO NOT want to miss.
  • Bill, KA9WKA, has announced that he is also going to be on hiatus for a while. Therefore, we now have an opening for a show notes taker and keeper of all knowledge! If you’d like to be that person, please send us an e-mail or get in touch with Pete or I in the IRC channel.
  • Website that lists known Linux Events.
  • http://answers.oreilly.com/topic/3507-list-of-known-linuxfest-events/

Topics:

Feedback:

  • Topic for short discussion: How is Ham Radio Free and Open Source?
  • Due to the length of the interview with Steve Nichols, feedback will be moved to after the interview in Episode #105.

Contact Info:

Music:

 


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].

Interesting day

It rained ALL day, for the most part.  Not really heavy, but a good soaking Spring rain.  Just what I need to get the grass growing again after I mowed it Friday night!

I started the day with a nice rag chew with Joe W2KJ. I always get a kick out of working Joe.  He’s an outstanding QRPer; and it’s always a pleasure to chat with him. But I really get kick out of the W2KJ to W2LJ thing – our calls being one letter apart.

This afternoon, I worked VQ975FOC/MM. If he was in the Chagos Islands, where the call sign is from, that would have been quite the QSO at 9,366 miles away.  But as he was signing /MM, Jim could have been just about anywhere on the face of the earth. Shortly after working him, I got a tweet from Chris KQ2RP. He was intermittently trying to work the same station in between shack cleaning chores. When Chris heard the VQ9 come back to me, he redoubled his efforts and got him in his log, also.  You know what they say, “QRPers of a feather, flock together.”  Cool, Chris, I’m glad you worked him too.

I worked VP5/W5CW down in the Turks and Caicos on 20 Meters.  I have worked Dave several times over the years in the big DX contests. I guess he’s down in the islands getting ready for the CQ WPX Contest, which is next weekend.

I also got a new DXCC entity in the QRP log today.  By working CP4BT, I worked Bolivia with QRP for the first time.  I’ve worked that country several times over the years, but it was always QRO in the past.  This time it was with 5 Watts.  I am going to have to go through my log and see how many that brings me up to via QRP.  I think it might be somewhere close to 130 now.

I finished the day by giving out points in the monthly Run For The Bacon.  It seems pickings were sparse this month; and that might be no surprise. I am willing to wager that a lot of my fellow piggies were returning home from Dayton today and were just too tired to hunt for bacon!

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].

Portable QRP = planning and adaptability

Last years shot of my planned location for today
It turned out to be a fantastic day  lots of sunshine and temperatures in around 23C. I was long over due and it was time to  pack up the KX3 and go on an outdoor trip with the rig. I brought along the Alexloop as well to give it a go outdoors.  Part of planning is making sure you have all that you need for the trip and not just radio stuff. There is water, one of those chairs you sling over your back, hat and sunglasses without these the trip could be not as comfortable. I arrived at my "spot" that I have gone to in the past found a nice parking spot in the shade. I then proceeded to unpack the car but could not believe the amount of mosquitoes that were buzzing around me. If planning had been better repellant would had been on the list but in all fairness at this time of year mosquitoes were the last thing on my mind. It was now time for adaptability and move to another location.
New setup in town
 There is no way I could have setup and been comfortable with the bugs at this location. I was now heading back to town and to another location. This one was along the river in town and always has a nice cool breeze off the river. I found my spot and setup did not take long at all and there was a table that was available as well. The Alexloop was very easy to setup and very fast to get it tuned up on 14.060. The KX3 was set to about 2 watts output and so began my CQ's. About 15 minutes into the portable operation the KX3 went
All packed up.
dead!! This has happen to me in the past with this radio and I knew exactly what is was! It was very poor planning on my part....the KX3 batteries were dead. Well not dead exactly but below the minimum voltage needed to operate the radio. That was the end of my out door adventure for the day and the radio is now at home getting it's batteries recharged. Monday is a holiday up this way and depending on the weather maybe I will give it a go on Monday.Going to have to look into a second set of batteries so I always have a charged set ready to go.

KX3 charging

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

Raspberry Pi camera, OS updates and DSTAR

Last week I noticed that the Raspberry Pi camera was available. At the princely sum of £20 including VAT, I ordered one from CPC It arrived very quickly but I didn’t have time to do anything with it until yesterday.

The camera is a PCB on the end of a ribbon cable – all very simple. I found the following instructions on the CPC site for installing the camera. OS and firmware updates are required to the Pi in order to use the camera. I followed the instructions through and didn’t encounter any problems, although somehow I managed to download the wrong script for the rpi-update (in the end, I used the procedure here https://github.com/Hexxeh/rpi-update)

I did have to take the Pi out of its’ case in order to connect the camera – and I have seen some correspondence which suggests that a case which accomodates the camera might not be far away.

Getting the camera going was fine, although this is where the CPC instructions fell down.  They mention software on the Pi called raspicam. I tried running it, only to find that the software wasn’t there. Initial reaction was that I’d messed up, but actually no, the software had been renamed and you need to look for raspistill and raspivid

I found the easiest way to attach the camera to something to hold it still was BluTack although trying to make that work on an odd angle, pointing the camera out of the window was a little frustrating!

Picture quality was good. It struck me that you could easily use the Pi and the camera for a shack webcam.

My other Raspberry Pi is dedicated to running my DSTAR gateway. I thought that I would upgrade the OS  in the same way today, although I’ve not upgraded the firmware as I didn’t want to use the camera on that machine (doubtless there are other improvements). The upgrade procedure took over 2 hours.

I also took the opportunity to upgrade Jonathan, G4KLX’s DVAPNode and Gateway software to the latest version. First time I brought the system up, the processor went to 100% and stayed there and I wondered what I had done! However, after a rather inelegant shutdown, involving removing the power – and bringing the system back up everything seemed to be working as it should, once again.

Proving it, I had a really nice DSTAR QSO with Horacio LU1BJW in Buenos Aires. I understand that DSTAR is not everyone’s cup of tea, but it does enable some very interesting QSOs to be made.


Tim Kirby, G4VXE, is a regular contributor to AmateurRadio.com and writes from Oxfordshire, England. Contact him at [email protected].

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