topic Re: Cable loss in Wireless

Cable loss

mark.cronin — Sun, 04 Jul 2021 00:07:59 GMT

Hello

I need clarification

I am using the Cisco 1242 Radio with

AIR-ANT5959 with 2dBm gain

and the

AIR-CAB005LL-R cable with 0.5dB loss

Where can you enter this in the Cisco WCS

access point configuration - when you select the ANT5959 antenna it automatically adds 2DBm for the Antenna without an option to subtract the loss for the cable

Mark

Re: Cable loss

dennischolmes — Mon, 09 Feb 2009 12:33:26 GMT

You must enter it as a custom omni directional antenna and calculate the total gain on the antenna including cable loss. EIRP = Transmitter Output power + antenna gain - cable loss.

Re: Cable loss

mark.cronin — Mon, 09 Feb 2009 13:01:22 GMT

Dennis

Thanks for the reply

The only option available for external antenna's is "other" so If I use this the total gain will be 2 (antenna gain) - 0.5 (cable loss) = 1.5

It is a shame that the self documenting of the ANT5959 is lost due to the cable loss calculation.

Do you agree

Mark

Re: Cable loss

dennischolmes — Mon, 09 Feb 2009 13:19:56 GMT

Very much so. I wish Cisco would just buy the Airmagnet product and incorporate that. Much more accurate and has tons of configuration options.

Re: Cable loss

mark.cronin — Mon, 09 Feb 2009 14:00:39 GMT

Dennis

Thanks

Mark

Re: Cable loss

becca1jane — Mon, 09 Feb 2009 19:41:53 GMT

Dennis-

Are you referring to AirMagnets Enterprise Analyzer for Cisco? The site I'm at is looking into wireless tools - they've got WCS, but just started to look into either AM's Enterprise Analyzer or Cisco's Spectrum Expert - not sure which way to go....

Re: Cable loss

dennischolmes — Mon, 09 Feb 2009 19:45:05 GMT

Airmagnet Site Survey Pro with Planning Module. This is the best predictive Ive seen to date for .11n. I own Airmagnet WifiAnalyzer and Spectrum Expert as well. They each have very important places in my tool box.