- Move ADS-B feed to Raspberry Pi to save power
- Move scanner feed to Raspberry Pi to save power
- Create an APRS iGate for my local area where there is currently no coverage.
This is currently a work in progress. I wanted a system that could run on minimal power and be as stable as possible. I will be completely eliminating the need for a server or computer by building the iGate itself out of an Arduino board. The receiver is going to be a Realistic Pro-48 crystal scanner from the 70s. I picked one up used and figured there can't be anything more solid for this install. No frequency programming needed! I already have a crystal being made especially for this, so we will see how a crystal iGate works! - APRS Digipeater
- Move scanner and future iGate to one discone antenna in attic.
Wednesday, November 5, 2014
Current and Future Projects
Don't worry readers, I haven't abandoned the blog! I am undertaking a few new projects, but they may take some time. Here are some things I am currently planning or already working on:
Sunday, September 28, 2014
The New Mobile Setup
My mobile setup initially started when I got into CB early last summer. Everything was pretty sloppy, the wiring especially. I wanted to fix it up and add a good VHF rig. I volunteer for a cycling event every year, so a robust VHF install was a must. My original intention was to go to a local 2-way radio and mobile electronics shop and have them do the work for me. I wanted a 3 or 4-radio rack on top of a floor-mounted post. They said it would be expensive and may be uncomfortable to have a passenger in the front seat. I agreed after hearing their argument. The tech suggested on a modified glove box design. I loved it! It would cost me about $600. The week before I driving back to school after the summer break, I called the shop and tried to book a spot. The tech I had spoken to was on vacation and nobody else was available. I even called another shop and they were booked too! I was so frustrated. Now I had to build it all on my own. I started by cutting the back out of the glove box and placing the radios inside for final measurements. After some trimming, I sprayed the inside with truck bed liner to cover the spray-on velvet that was original. Next was securing everything with Velcro. It looked great! Next was wiring. Power junctions were placed in the dash and wired to the battery and coax was run from the rear of the vehicle. I used a short piece of wood to mount all the mic holders to and Velcro'd it to the center of the dash. It took about a month to find the proper Velcro that would last. I found Scotch DualLock to be best with the heat and strength. This is the same stuff that is used for toll transponders.
Field Day 2014
Wow it's been awhile since I have written a good story on here, but for good reason I guess. As a lot of you know I am a college student, so my schedule provides little time to fully explore the hobby as most do. My Field Day was pretty uneventful. I had just come home from a business trip with my summer internship, so I didn't have much time to plan. In fact, I was preparing to leave on another trip! I decided to just use my home station on commercial power. I wasn't going to stay up all night making contacts so I hopped on the radio when I could and made a few contacts. Probably my most boring post, but there's more to come, I promise!
Saturday, April 26, 2014
My Ham Radio Story Part V - 4/25/14
I always liked the idea of running HF mobile, being able to drive to great locations and fire up the radio right there in the car. I could never afford some of the bigger setups as a student, so I jumped at the chance to buy and HTX-10 25 watt 10 meter radio for my car. I found it listed for sale by Matthew KD8OMT, Section Emergency Coordinator for West Virginia, on QRZ. Matthew was great and I got the radio in just a couple of days. I wanted to make sure I installed it in my car correctly, though, so I did some planning. I ran a large cable from the battery to a distribution box under my dash. This would serve as an easy way to hook up other radios in the future. I also installed a new ground bolt nearby. This power setup should easily handle a variety of equipment and up to 50 amps of current. When choosing an antenna, I wanted to keep it simple. It was only 25 watts, so I just needed something that worked. I chose to go with the 10 meter version of the MFJ "Ham-tenna". This antenna comes in 2 pieces - a 4 foot fiberglass section and a 4 foot whip for the top. I never realized it was going to be so big! I mounted it using a clamp-style trunk mount and I was able to tune it perfectly within just a couple of minutes. It presents some problems with low height clearance, but I think it will survive for awhile.
As noted in older posts, I have participated in 2 public service events in the past. I would say they were good practice for how a service net is conducted, but they did not prepare me much to handle medical communications for The Boston Marathon. Some will say "it's just relaying information." Wrong! It's so much more. Try staying calm when you get a mayday from down the street for cardiac arrest and you're in the middle of processing another ambulance request. When communications are not medical-related or potentially life-saving, yes it is pretty standard, but one cannot help but stress when someone's life may be on the line and relying on you to make clear and concise calls to dispatchers.
This year was my first year working at the marathon and it was an amazing learning opportunity. Hams demonstrated their ability last year after the events that unfolded and they were brought back in greater numbers to support this year's event. We worked alongside police, fire, military, and ems crews as well as being under the coordination and advisement of the Massachusetts Emergency Management Agency (MEMA) and the Federal Emergency Management Agency (FEMA). I think it may have been one of the first demonstrations of such a wide coordination across agencies and volunteers in state history.
The ARRL did a great article on this year's event and I think it sums up the big picture pretty well. http://www.arrl.org/news/more-than-300-amateur-radio-volunteers-support-2014-boston-marathon
I was stationed with Tom NV1U and George K1GHC at First Aid Station 13, which is located right at mile 19. George had to leave for a prior commitment right in the heat of the race, so it left Tom and I quite overwhelmed at times, but I think we handled it well under the advisement of our station's FEMA rep.
Overall, or station treated about 80 people, out of that only 4 were transported to the hospital. I am happy to report that 80% returned to the race. Our station was actually staffed by students and staff of Tufts University medical program. Tufts is a leading private research university and is known for their great medical programs. We were also an advanced-capability tent with advanced sodium testing and IVs and were also able to accept patients from EMS teams if they were overloaded. I would compare our abilities to that of a standard emergency room.
As noted in older posts, I have participated in 2 public service events in the past. I would say they were good practice for how a service net is conducted, but they did not prepare me much to handle medical communications for The Boston Marathon. Some will say "it's just relaying information." Wrong! It's so much more. Try staying calm when you get a mayday from down the street for cardiac arrest and you're in the middle of processing another ambulance request. When communications are not medical-related or potentially life-saving, yes it is pretty standard, but one cannot help but stress when someone's life may be on the line and relying on you to make clear and concise calls to dispatchers.
This year was my first year working at the marathon and it was an amazing learning opportunity. Hams demonstrated their ability last year after the events that unfolded and they were brought back in greater numbers to support this year's event. We worked alongside police, fire, military, and ems crews as well as being under the coordination and advisement of the Massachusetts Emergency Management Agency (MEMA) and the Federal Emergency Management Agency (FEMA). I think it may have been one of the first demonstrations of such a wide coordination across agencies and volunteers in state history.
The ARRL did a great article on this year's event and I think it sums up the big picture pretty well. http://www.arrl.org/news/more-than-300-amateur-radio-volunteers-support-2014-boston-marathon
I was stationed with Tom NV1U and George K1GHC at First Aid Station 13, which is located right at mile 19. George had to leave for a prior commitment right in the heat of the race, so it left Tom and I quite overwhelmed at times, but I think we handled it well under the advisement of our station's FEMA rep.
Overall, or station treated about 80 people, out of that only 4 were transported to the hospital. I am happy to report that 80% returned to the race. Our station was actually staffed by students and staff of Tufts University medical program. Tufts is a leading private research university and is known for their great medical programs. We were also an advanced-capability tent with advanced sodium testing and IVs and were also able to accept patients from EMS teams if they were overloaded. I would compare our abilities to that of a standard emergency room.
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