Author: John
Laird RG191 gateway on TTNv3 (AU915)
![](https://www.john.geek.nz/wp-content/uploads/2021/06/chrome_2021-06-21_13-15-29-200x150.png)
Before the advent of cheap(ish) LoRaWAN gateways, the most cost effective option for me was to put a Laird RG191 in a waterproof enclosure, add PoE input and an external antenna connector. These gateways worked fine on The…
Read More »RFE TPA-PAF Slant 45 Mod
![](https://www.john.geek.nz/wp-content/uploads/2020/11/slant45_paf_10-200x150.jpg)
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…
Read More »RFE Ultrahorn Slant 45 Mod
![](https://www.john.geek.nz/wp-content/uploads/2020/11/ultrahorn_slant45_4-200x150.jpg)
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…
Read More »Giant Kiwi from a drone
![](https://www.john.geek.nz/wp-content/uploads/2020/10/DJI_0742-200x150.jpg)
We recently bought a drone for our business so I took advantage of a “training” session to get some photos of the kiwi. I’ll mow it again soon and get some better phtos, but here’s the first photo…
Read More »Giant Kiwi on Google Earth
![](https://www.john.geek.nz/wp-content/uploads/2020/10/googleearth_2020-05-02_13-58-31-200x150.png)
Google has finally updated their satellite imagery. It shows the kiwi (and my TARDIS). I need to work on the contrast as its not super visible.
Read More »TARDIS build – Window boxes
![](https://www.john.geek.nz/wp-content/uploads/2020/11/tardis_smoke_1-200x150.jpg)
Each window of my TARDIS has a 100mm deep light box behind it. The plan is to use frosted perspex for the window and then use white LED strip lighting to make the windows light up. I didn’t…
Read More »TARDIS build – Trim Installed
![](https://www.john.geek.nz/wp-content/uploads/2020/11/tardis_trim_1-200x150.jpg)
I managed to get the corner trim and the police sign edge installed on my TARDIS
Read More »TARDIS build – Walls Up
![](https://www.john.geek.nz/wp-content/uploads/2020/11/tardis_walls_2-200x150.jpg)
I managed to get the TARDIS walls up today and I got a first coat of paint on. The walls are an inner layer of 9mm plywood with an outer layer of 7mm. I’d use the word laminate,…
Read More »TARDIS build – Roof Light
![](https://www.john.geek.nz/wp-content/uploads/2020/11/tardis_light_2-200x150.jpg)
I’m being pretty flesible with some of the build of my TARDIS – It’s primarily a shed to store beekeeping gear and it is some 50 metres from the road, so the public shouldn’t be getting up close…
Read More »Giant Kiwi Finished
![](https://www.john.geek.nz/wp-content/uploads/2020/10/2019-12-29-15.46.29-200x150.jpg)
I’ve finished mowing my kiwi in the paddock. It was marked out with survey grade GPS precision. It’s now just a matter of waiting for google earth to update their imagery.
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