Buddipole mini 9-section shockcord whip

Today I spent some time playing around with my new mini 9-section shockcord whip.  I started out on 10m and used the standard mini-buddipole parts.  Versatee –> 2×11″ arms each side –> coil –> standard whip.  I set this up as a horizontal dipole, with the coils tapped in 1.5 turns on each side.  Whips fully extended.  I fed the Versatee with the TRSB at 1:1, with 25′ of RG-8X coax.  The antenna performed really well with low SWR, and I was easily able to work a Brazil station.

Next up was 12 meters with the shockcord as a vertical.  I put the 9-section whip on the versatee, with the stinger retracted and no accessory arms, no co

Posted in B's Blog

Adding racks to my Century truck topper

Yesterday I did some craigslist shopping to get the pieces and parts needed to add racks to my truck topper. I was going to weld up custom racks but liked the flexibilty of these commercial track systems. The towers and crossbars I found are Thule, but the tracks I found are Yakima. Everything I found online suggested the tracks are identical, but that is not true!  The plates used in the Thule system are too thick to nest correctly in the Yakima tracks. Using them like that could lead to serious failure. So, I machined the plates down a little to fit correctly. 

    

Posted in B's Blog

2016 NCARC Hamfest

This was my first year as a vendor at the Northern Colorado Amateur Radio Hamfest.  I did pretty well with 1 table and a bunch of junk!  I managed to sell almost everything I brought, and made enough money to fund a kegging system for my homebrew beer endeavors.

Posted in B's Blog

Hello!

So far behind on this blog, but it is still active and I hope to update it more in the near future.  I have many projects that I would like to document here.

 

Bryan N0BCB

Posted in B's Blog

portable amateur UHF repeater

Posted in B's Blog, N0BCB

Motorola GM300 cross band repeater

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.
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Other images of this repeater setup can be found at: mainelife images

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First time out with the Alaskan Sawmill

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.

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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.

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Security camera Foscam FI8904W

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.

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Image viewed through the free Foscam iOS app on my iPhone

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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.

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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.

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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.

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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!

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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.

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Posted in B's Blog

New VHF/UHF antenna

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.

 

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W0C/SR-059 Mt Democrat and W0C/FR-001 Mt Lincoln

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.

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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.

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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.

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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.

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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!).

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The final track log and elevation profile:
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All the photos from this trip can be viewed in my Smugmug Gallery

73 de Bryan N0BCB

Posted in B's Blog, N0BCB, SOTA Tagged |