Re: [Openbts-discuss] For fun - a BTS audible power regulation

[Ralph A. S. d. <ra...@sc...>]

Yep, had this even with the few mW from my B210 and a TFT monitor with speakers :) And it is almost 1750 Hz what many ham radio operators will recognize immediately. 


Ralph.

 

From: Alexander Chemeris [mailto:ale...@gm...] 
Sent: Wednesday, 16 December, 2015 05:22
To: Openbts Discuss
Subject: [Openbts-discuss] For fun - a BTS audible power regulation

 

Hi all,

 

Just for engineering fun. You power on your BTS and it starts screaming like an alarm buzzer. For a second you think it is going to blow up and what you've done wrong. Only a few seconds later you get a relief, realizing that it's not your BTS - it's a talking clock staying next to it who is producing the sound. Everyone knows that if you put your phone close to a speaker, it'll "chirp" when you receive an SMS or a call. Same thing here, but BTS transmits constantly (except guard bits between bursts of course), so the sound is also constant. Now you know how much to attenuate your BTS when working with it- enough to make your ears happy.

 

https://www.youtube.com/watch?v=S5uF6xcs0rw <https://www.youtube.com/watch?v=S5uF6xcs0rw&feature=youtu.be> &feature=youtu.be

(don't forget to have sound turned on)


 

-- 

Regards,
Alexander Chemeris.
CEO, Fairwaves, Inc.

 <https://fairwaves.co> https://fairwaves.co


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