N0BCB WeatherCurrently37°Partly CloudyTomorrow is forecast to be Warmer than today.Thursday 01/29 2%High 46° / Low 24°Partly CloudyTomorrow is forecast to be Warmer than today.Thursday 01/29High 46° / Low 24°Tomorrow is forecast to be Warmer than today.Friday 01/30 6%High 50° / Low 28°Chance of SnowTomorrow is forecast to be Warmer than today.Friday 01/30High 50° / Low 28°Tomorrow is forecast to be Warmer than today.Saturday 01/31 22%High 38° / Low 20°Chance of SnowTomorrow is forecast to be Warmer than today.Saturday 01/31High 38° / Low 20°Tomorrow is forecast to be Warmer than today.Sunday 02/01 6%High 35° / Low 18°Mostly CloudyTomorrow is forecast to be Warmer than today.Sunday 02/01High 35° / Low 18°Tomorrow is forecast to be Warmer than today.Monday 02/02 4%High 50° / Low 27°Mostly CloudyTomorrow is forecast to be Warmer than today.Monday 02/02High 50° / Low 27°Tomorrow is forecast to be Warmer than today.
I’ve been playing around with old Motorola commercial gear on the amateur bands, and decided to try a cross band repeater. This setup is using 1/each of the VHF and UHF versions. For ID and repeater control, I built an ID-O-Matic IV by hamgadgets.com. The duplexer is a MFJ916B. Antenna is a TRAM-1480 @ 35′ AGL.
Other images of this repeater setup can be found at: mainelife images
My friend Paul let me borrow his 36″ Alaskan sawmill. I purchased a Stihl MS 391 and a 32″ bar to go along with the mill. Yesterday I took this rig up to the Forest to test things out.
With a Stihl ripping chain, I thought the results were OK. Definitely not awesome. I think playing around with the grind angle on the chain will help some. For the most part, I plan to cut beams and build a pergola in my yard. It should work fantastic for that. I was playing around cutting boards just to test the thing out.
Due to recent vandalism at my cabin in Maine, I decided to add a video camera to watch the entrance area. A friend gave me this Foscam FI8904W IP camera and an older Verizon Mifi 2200 hotspot. I activated the hotspot for an additional $20 on my current account, sharing our 8gb data plan. In order to route outside traffic to the camera, I am using a Cradlepoint CTR35. The CTR35 connects via USB to the Mifi, powering the Mifi at the same time.
The system is going to run from my solar power system. I already have a 150 A/h bank, but need to add additional solar panels. My calculations show 105W of solar is needed for my location; I’ll add 200W to cover other use. The total load for this entire system varies from 9.5W to 11.5W depending on whether the IR lights are on or off. It should also go higher than this when sending an image. The amplifier itself draws ~5W so if I can get by without it, I’ll leave it turned off.
Image viewed through the free Foscam iOS app on my iPhone
Cradlepoint CTR35. I have the Ethernet port configured as a LAN port, which connects to the camera via a cable. I didn’t care to use the Wifi function on the Foscam camera. If I add additional cameras, I can put a switch here. USB cable is going to the Mifi. Power is to the 12V solar battery bank.
I have this Wilson cellular amplifier that came with my truck when I bought it. It uses ~ 5W of power, but I think I’ll need the boost at the cabin. Cell service is generally poor out there.
I have everything terminated in Anderson PowerPoles to make connection easy once I get to Maine and do the installation. It also makes it easy to disconnect devices during troubleshooting.
The Foscam camera requires 5VDC for power. I picked this DC-DC converter up from Amazon.com for $8. So far it does the trick; we’ll see how long it lasts!
The Wilson cell booster. This device uses an external antenna (I’m using a Yagi), and provides a local hotspot to the cell phone cradle.
I finally got around to adding an antenna for the 2m and 70cm bands at my house. I chose the Tram 1480 since it got great reviews and was half the price of comparable amateur base antennas. The antenna is fed with about 40′ of LMR-400 and is mounted to a short satellite TV mount about 30′ above ground level. So far this setup seems to work great, but I don’t spend much time on these bands so time will tell. I did use self-sealing antenna tape on the mid-section joint, based on reviews about water getting into the antenna.
Continuing on with my recent desire to add more points to my SOTA total, I decided to drive to the Kite Lake TH last night and camp for an early am start up Mt. Lincoln and Mt. Democrat. Mark, Christian and I hit the trail head at 6am to beautiful weather. It had rained some around 4am but was clear when we left camp.
When we got close to the summit of Democrat, dark clouds were already building. The weather forecast had been clear until 2pm. So much for weather forecasts! We pushed on to the summit and the clouds moved off to the West/North.
I worked a few guys right away from Democrat, then packed it up with hopes of making Lincoln before bad weather hit. I had forgotten (thin air?) that I was going to try working K1Jd and KT5X in Santa Fe on CW. I had scheduled a QSO on 2m with Bob K0NR, and he was within range of 2m at his cabin.
We crossed over Mt. Cameron. This one doesn’t qualify for SOTA, and really doesn’t qualify as a 14er for any bragging rights. Not enough prominence. Somebody had left these cardboard signs on all the summits.
There were more chasers available from Mt Lincoln. I quickly had enough in the log and moved on. The weather was really starting to close in. It was fun to work a few guys on 40m-CW. Nowhere near the pileup I would have dealt with on 20m.
On the way across from Cameron to Bross, it started hailing and thundering. I decided to not try my luck on Bross (plus it’s a closed summit, but that wouldn’t normally stop me!).
All the photos from this trip can be viewed in my Smugmug Gallery
73 de Bryan N0BCB
A continuation from my first POST about this subject
I got the panel mounted tonight. 3M VHB tape and some angle iron. Seems to hold well!
The hardware is #10 stainless self-drilling screws with star washers from a local hardware store. I did add some 5200 around the connector once plugged in to help hold it down. I wasn’t confident that it would stay plugged in, or that the cord would seal well to the boot.
I’ve been wanting to permanently mount a solar panel on the roof of our truck camper since installing the Truckfridge TF49 compressor type refrigerator. Routing the wires in was the biggest obstacle. Through a few internet searches, I decided on a marine bulkhead. I used 3M 5200 to seal this little guy to the roof, then routed the wiring through the tent and cabinets and down to the battery.
See Part II
Last year for Field Day I built a 6 meter, 4-element Yagi-Uda antenna for the W5YA team. I never tried to match the antenna for 50Ω, and it compared poorly to Doc’s Hex Beam antenna. This weekend, in anticipation of FD 2014, I decided to finally try and match the antenna. I tried several designs. My initial try was a hairpin match, which brought the 100Ω impedance up to 200Ω. Then, I tried a 75Ω, 1/2 wavelength coax transformer as a 4:1 Balun. I played with this a lot, but could not get it to match well enough.
Today I tried a parallel 75Ω match based on this page. Based on my Yagi dimensions, this showed a resonant frequency around 48 MHz. I shortened my driven element whips about 2″ and brought the antenna to a perfect (enough) match!
I’ve been slowly building up my Steve Weber Mountain Top Radio version 2 kit over the past week. For the SMT parts I chose to try reflow soldering in a toaster oven, and I’m glad I did it that way. I used solder paste in a syringe from Cash Olsen as recommended by Steve. For the oven I used an unmodified $20 Rival oven from Walmart set to 420F and simply watched for the paste to become glossy solder.
Right now I’m in the process of winding the toroids and soldering them down. I’ll update this again once all parts are down and I begin with adjustments and testing.