Use a Scanner to find the frequency and listen to the audio for rapid data
pulses. The timing of the data could indicate if this is very short bursts, or
slower wide-bandwidth pulses.
Set your RF Finder to the centre frequency with 2mHz sweep setting.
This gives 1mHz either side of your frequency to identify the data pulses
when transmitting to the garage door unit.
Rod Heazlewood. Christchurch, NZ.
Thank you for the reply. Yes, I tried that and it just doesnt show anything. I have tried old and newer garage door openers, and none of them show on the Explorer. Maybe you are right and garage door opener signals are too short to register.
On Friday, September 9, 2022 at 2:01:43 PM UTC-5 RF Explorer wrote:
It may be this specific transmitter create very short duration pulses, and therefore depending on your setup may not work.
Please configure your RF Explorer in this way:
* Use left-sidconnector 50Khz-960MHz module as it is faster than right-side modul
* Center Freq: 300MHz
* Freq Span: 5MHz
* Calculator: MaxHold
RF Explorer Team
On Friday, September 9, 2022 at 10:19:13 AM UTC+2 Andy wrote:
I have been trying to detect the transmission from a couple of different garage door opener transmitters, and I wonder if anyone has experienced this. My 6G Combo+ will detect a lot of different transmitters I have tried including even key fobs. But an odd thing happens when I try to detect a garage door opener in the 300 MHz band; Nothing at all. tried many different settings, RBW, etc. I can detect other 300MHz transmitters that have broader bandwidth, but two different types of garage door opener brands detect no power at all. (yes they work).
Do you think it is possible that the bandwidth on a door opener is so narrow that the rf-explorer cannot detect it?
South Island Electronics
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