Replying to Avatar Tristan Brice Velloza Kildaire

Hey Meshtastic and Reticulum communities.

Quick question. I am looking into buying one of those TTGO/Lillygo T-Beams. They have an SMA connector which connects to their 868Mhz LoRa radios and I was wondering if ANY 868Mhz antenna can be used?

Looking at one of these which supports `860-980`, `1710-2170` and `2500-2700` MHz bands.

#meshtastic #reticulum #lora
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Danie 1y ago

Yes it should work as long as it is resonant for 868 MHz band. You can always use an adaptor on the coax side. One thing though is 868 MHz does lose a lot of signal over distances of coax so you want to keep coax short, or use LMR400 type coax for that frequency. You can see my antenna, and some tips, on my page at https://gadgeteer.co.za/hamradio/meshtastic-in-south-africa.

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Tristan Brice Velloza Kildaire 1y ago

I am looking now at yours. So you convert to that bigger LM40.

I am making notes, thank you. Also, thanks for reminding me about robotics.co.za

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Danie 1y ago

Yes you can use the adaptors - for outside must make sure you put on some weatherproof tape and have a cable tie over that so it does not come loose

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Tristan Brice Velloza Kildaire 1y ago

Noted! Baie Dankie Danie

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Tristan Brice Velloza Kildaire 1y ago

Okay, I have found your antenna. I see there is also a 150cm variant which I am quite interested in (I don't have the added height benefit of your mast).

Then also the LMR400, in various measurements so I will take that into account for where I want the cable to lead to