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RFE TPA-PAF Slant 45 Mod

Here’s how to modify an RF Elements Twist Port Adapter from H+V to Slant 45. Note that this change DOES NOT change an attached antenna from H+V to Slant 45, it just corrects the orientation of the Twist…

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RFE Ultrahorn Slant 45 Mod

RF Elements make an excellent lineup of horn antennas with a twistport waveguide antenna. Unfortunately they come out of the box in a H+V (Horizontal + Vertical) configuration. Slant 45, or X polarity simply means that the H+V…

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New RTK GPS Base station

I’ve been running an RTK GPS Base station and feeding the data to rtk2go.com since early 2018.  I was initially using a UBlox Neo-M8T which only worked on L1 frequencies, but earlier this year I upgraded it to…

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U-Blox LEA-6H Precision

This is one of the many tests I’m doing to compare GPS/GNSS receivers. I’ve had this u-box LEA-6H unit for about five years. It was the GPS that came with the 3D Robotics ArduPilot that I’ve been using…

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How precise is a circa 1999 Garmin eTrex?

This is the first of the tests I’m doing to compare GPS/GNSS receivers. I got my first GPS unit, a Garmin eTrex in 2001 and I used it to Geocache. It’s sat unused for over 12 years, but…

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Measuring GPS (GNSS) Accuracy and Precision

With the recent technological advancements, I’ve recently become interested in RTK GPS and decided it would be fun to compare all the different GPS/GNSS (Global Navigation Satellite System) receivers I own. I ultimately plan to see how they…

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Converting the pinout on a Tycon POE-INJ-1000-DINx PoE injector

Tycon power sell a relatively cheap high power gigabit PoE injector. The high power bit means that it inserts power on all four ethernet pairs. This is important when using PoE to power devices over long cable lengths,…

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Using LetsEncrypt with Ubiquiti Unifi Video server

I’ve spent a lot of time scratching my head trying to get LetsEncrypt, or more accurately certbot working with Ubiquiti UniFi Video server, especially auto-renewing the certificate every month or so. I found two posts on the Ubiquiti…

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I’m still here

To answer all those messages… Yes, I am still alive! Watch this space, more posts to come very soon

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Cheese fridge repairs

My cheese fridge was partially destroyed at the start of July. A car crashed into a power pole carrying both a 22kv distribution line and the 230v line for our house. They . touched . briefly It turns…

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