[time-nuts] Choke Ring Pictures

[WarrenS]

Magnus wrote:
> "Multipath rejection, antenna selectivity, antenna amplifier gain, antenna 
> noise factor... all weigh in."
    And Your point is?
Their effects would all be included in as much as they effect ADEV Osc noise 
and Phase noise.

>"Several of us have carrier phase and dual frequency receivers. I lack a 
>good double-frequency antenna, choke-ring with
sufficient amplifier gain."
You're not the Average Time nut and sounds like you're saying even you 
aren't using a choke ring with a carrier phase receiver?
Sounds like to keep it simple, still don't not need to test for that yet.

ws

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

>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