[time-nuts] Choke Ring Pictures

[Magnus Danielson]

WarrenS wrote:
> 
> Bruce wrote:
>> "Which antenna performance metric do you have in mind?"
>    Could do GPSDO hold over performance, but that would not be much of a 
> test of the antenna.
> How about the antenna's effect on the ADEV Osc noise and Phase noise.
> What else does the Time Nut care about?

Multipath rejection, antenna selectivity, antenna amplifier gain, 
antenna noise factor... all weigh in. Even for a simple Thunderbolt.

>> Since the better timing receivers use carrier phase ...
>    I don't remember you ever finding ANY Time Nut that is now using one.
> So may be simpler for now to just stick to the more common type of GPSDO 
> in use.

Several of us have carrier phase and dual frequency receivers. I have 
several myself. I lack a good double-frequency antenna, choke-ring with 
sufficient amplifier gain.

Cheers,
Magnus