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Wednesday, June 3, 2015

442.300 repeater is up and running.

After several months of slow progress, the 442.300 repeater is on the air in Henderson. This repeater is a Tait rack with the T855-20 receiver, T857-20 exciter and T859-20 PA. Recently added is the Motorola TLE2351A 250w Duplexer and an ID-O-Matic controller. I used some aluminum tube stock that was laying around to mount on for now. The frequency coordination with Texas VHF-FM Society was only about a two day turn around.

The repeater is located at my shack and is on my 55' crank up tower. I recently added a 20' pipe which puts the center of the Diamond fiberglass antenna around 80'. It is working well for the limited height and for the crap coax and dual Diamond. My biggest joy, other than getting her working, was being able to work the repeater from inside our local Wal-Mart - typically a dead zone.

The 2k trim pot was loose in the 859 and at one time someone tried to heat it up and set it from the top of the PCB. Evidence was in the form of a large melted spot in the shape of a soldering iron. The heat job froze the pot at 700 Ohms. A close friend of mine, KN5G, gave me a trim pot which I damaged shortly after the install. New ones are on the way and I'm using a 20k for now that is tucked under the cover. Adjustment of the 20k pot was rough but she's running at 55w into the duplexer and 42w out to the antenna. I somewhat understand why they tried heating it from the front, because the tear down and rebuild took me over 3 hours.

Eventually, we will have to find this machine a new home with some altitude and fine tune it for that site. For now we'll run her as she sits. 

So if you're traveling through Henderson, tune to 442.300 (+ 5MHz) - no PL tone and say hello! 

Tuesday, March 24, 2015

Whitebox Radio. Open Source!

I highly recommend checking out the Whitbox SDR. The direction and possibilities for this is incredible. Key word here is open source! 

Thursday, February 12, 2015

This is a must see!! Active HF conditions based on a new ionospheric sounding method called HF Ionospheric Interferometry.

Thursday, December 18, 2014

Baofeng UV-82 Unboxing

Since the screen crapped out on the Wouxun UV-8D, I replaced it with a Baofeng UV-82. Here is a short video of the unboxing. Review will be following shortly. So far, this is one of the best HT's that I have owned. It's amazing that a $150 radio is out performed by a far superior $40 radio.

Friday, December 5, 2014

KG-UV8D Screen Problem

Well guys, this is disappointing.

I went to bed last night with a fully functional radio and got up this morning to this. The radio has never been dropped, near any moisture, or any sort abuse. I've only had this radio for about two weeks and have been working on other things so have not taken the time to do a review yet. This radio was a little more expensive so I expected better quality.

So, I've contacted Wouxun and will see what they do. Meanwhile, back to the Yaesu or KG-UV3D for now. Thinking I should have bought an extra UV3D instead. Either way, not sure if I will be buying Wouxun again. We'll see how this goes.

Here's a short video of the problem.

Saturday, November 15, 2014

Unboxing of Wouxun KG-UV8D

This is a short unboxing of the Wouxun KG-UV8D on 11-15-2014. This unit was ordered from Sanatop through I will post a follow up video after programming is complete.

Saturday, October 18, 2014

Repeater Progress

Slowly making progress on what will be the 70cm NU5G repeater.

The primary use for this 440 MHz. repeater will be for general use of local Hams. It will also be used with Skywarn and will make an excellent back up for the N5RCA club repeater. With an available 100 watts, it should be a nice addition for ham communications in the area.  I have the controller software all sorted out and a prospect for a good closed cabinet for the entire system to sit in. The power supply, duplexer and cavities will take some time to acquire and install in the cabinet, but I also have a source lined up for each of them. All things considered, I should have this project together before Thanksgiving and can begin testing the system on my 55' tower. Once all the bugs are worked out, the chore of finding a site with some elevation will begin. Stay tuned for updates.  
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