[time-nuts] Choke Ring Design for L1

WarrenS warrensjmail-one at yahoo.com
Sat Mar 13 17:58:24 UTC 2010


>Is there a design for a choke ring to add to my existing L1 GPS antenna ?

Yeah
If you are using it for GPSDO work where a ns is good enough and you don't need cm accuracy,
It is called a pie pan with its  Lip turned up.  
A choke rings blocks reflected signals from below the antenna from effecting the signals, a pie pan works pretty good at that also.

ws

***************

> Hello The Net:

> Is there a design for a choke ring to add to my existing L1 GPS antenna ?

> While there may be some variations to the exact dimensions of a choke 
> ring to a specific type of L1 antenna, either patch, helical, etc.,
> I suspect there is some commonality to the design dimensions.

> I am looking to start construction and I will be using a cheapie 
> patch/puck antenna.

Stan, W1LE


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