Re: [time-nuts] What's "dBic" on GPS antenna gain figures?

2011-11-03 Thread Marco IK1ODO -2 

At 15:13 03-11-11, you wrote:
So its just 'dB' relative to a circular polarised isotropic radiator 
- never knew that before!


Correct. It is the standard way to declare the gain of a circularly 
polarized antenna when receiving or transmitting circularly polarized 
waves, as "dBi" is valid only for linearly polarized ones.


73 - Marco IK1ODO


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Re: [time-nuts] What's "dBic" on GPS antenna gain figures?

2011-11-03 Thread David Bobbett 
So its just 'dB' relative to a circular polarised isotropic radiator - 
never knew that before!



On 03/11/2011 13:18, Chuck Harris wrote:

Here, try this link:



-Chuck Harris

David Kirkby wrote:

I've noticed a few GPS antennas give a gain in units of dBic.

http://www.maxtena.com/datasheets/m1227hct-a-sma.pdf

Does anyone know what this means? I've come across dBi  and dBd, but
never dBic.

Dave

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Re: [time-nuts] What's "dBic" on GPS antenna gain figures?

2011-11-03 Thread Chuck Harris 

Here, try this link:



-Chuck Harris

David Kirkby wrote:

I've noticed a few GPS antennas give a gain in units of dBic.

http://www.maxtena.com/datasheets/m1227hct-a-sma.pdf

Does anyone know what this means? I've come across dBi  and dBd, but
never dBic.

Dave

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[time-nuts] What's "dBic" on GPS antenna gain figures?

2011-11-03 Thread David Kirkby 
I've noticed a few GPS antennas give a gain in units of dBic.

http://www.maxtena.com/datasheets/m1227hct-a-sma.pdf

Does anyone know what this means? I've come across dBi  and dBd, but
never dBic.

Dave

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