13cm band occupied spectrum
Posted: Sat Sep 05, 2009 5:41 pm
Hi all,
Today i made a plot of the activity on 13cm band with my dish antenna pointed at GB3KM, Span is 200MHz and centred on 2400MHz (through Kuhne downconverter) The capture was taken over a period of 5 minutes peak hold.
As you can see KM on 2.440GHz is not even visible under the Bluetooth and WiFi signals, this is pointing out from where i live in a village, the towns are 2-3km away so i'm sure it will be far worse there!
It may be of use to someone thinking about applying for a new repeater on 13cm....
Keep it below 2.4G and you will be fine..hi
See screenshots below plus 23cm spectrum too..
73
Rob
Today i made a plot of the activity on 13cm band with my dish antenna pointed at GB3KM, Span is 200MHz and centred on 2400MHz (through Kuhne downconverter) The capture was taken over a period of 5 minutes peak hold.
As you can see KM on 2.440GHz is not even visible under the Bluetooth and WiFi signals, this is pointing out from where i live in a village, the towns are 2-3km away so i'm sure it will be far worse there!
It may be of use to someone thinking about applying for a new repeater on 13cm....
Keep it below 2.4G and you will be fine..hi
See screenshots below plus 23cm spectrum too..
73
Rob
- 13cm band spectrum 2300-2500MHz
- 13cm Centred on 2400MHz.jpg (110.96 KiB) Viewed 3629 times
- 23cm band spectrum 1235-1285MHz
- 23cm 1260MHz.jpg (127.57 KiB) Viewed 3628 times
- 23cm band spectrum 1275-1325MHz
- 23cm 1300MHz.jpg (123.04 KiB) Viewed 3628 times