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Simple RF Receiver / Transmitter Pair (27 MHz)

Posted: Mon Dec 30, 2013 5:19 am
by andrew
http://www.youtube.com/watch?v=jeRtyOgf0mI
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like the videos

this is fantastic!!!!!

but i have two question below :

1.can this transmit pulse signals about 1500 bps?

2.if i have two pairs of this system, will they disturb each other during operation for that the frequency is the same? any way to solve the problem? like change the frequency?

this is just cool!!! you inspired me.

Re: Simple RF Receiver / Transmitter Pair (27 MHz)

Posted: Sat Feb 15, 2014 6:39 pm
by ThePyroElectro
andrew wrote:http://www.youtube.com/watch?v=jeRtyOgf0mI
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like the videos

this is fantastic!!!!!

but i have two question below :

1.can this transmit pulse signals about 1500 bps?

2.if i have two pairs of this system, will they disturb each other during operation for that the frequency is the same? any way to solve the problem? like change the frequency?

this is just cool!!! you inspired me.


1 - Yea 1500 bps isn't a problem but this is not a redundant system, it's likely data would get corrupted or lost in transmission without some real filtering.

2 - Yea two pairs would disturb each. There's no filtering at all so harmonics are spit out like crazy. When you look at the transmitter on a spectrum analyzer you can see TONS of harmonics, so you'd have to jump down or up a megahertz at least.