Re: [Elecraft] K3S RX antenna switching questions

2017-11-14 Thread Ken Roberson via Elecraft 
Also make sure that your rx antenna is not running over ground radials from tx 
antenna73 Ken K5DNL
 

On Tuesday, November 14, 2017, 12:57:10 PM CST, j...@kk9a.com 
 wrote:  
 
 I am surprised that the front end protection would kick on with that much
RX antenna spacing and only 50 watts unless there is another way RF is
getting into the shack. If that is what's happening I concur with W3FPR.
Another option would be a receiver overload protector such as
https://www.dxengineering.com/parts/dxe-rg-5000  .

John KK9A


Don Wilhelm wrote:

I suspect that increasing the TX Delay will *not* fix that problem.
Since at greater than 50 watts, you hear relays clicking indicates that
the K3S COR is being activated.
The solution is to either move your RX antenna further from the TX
antenna or use some device that disconnects or grounds the RX antenna
while transmitting.

73,
Don W3FPR

On 11/13/2017 7:26 PM, Steve Steltzer via Elecraft wrote:
> Here's the setup : 3 month old K3S. Full wave 80 mtr RX loop. Closest
point to TX antenna is around 200 ft. Over 50 watts I hear relays
clicking and stations have a hard time breaking in even using QRQ plus.
I assume the RX antenna is not switching fast enough and I'm getting 
milliseconds of high RF into the front end and protection relays are
kicking in???

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[Elecraft] K3S RX antenna switching questions

2017-11-14 Thread j...@kk9a.com 
I am surprised that the front end protection would kick on with that much
RX antenna spacing and only 50 watts unless there is another way RF is
getting into the shack. If that is what's happening I concur with W3FPR.
Another option would be a receiver overload protector such as
https://www.dxengineering.com/parts/dxe-rg-5000  .

John KK9A


Don Wilhelm wrote:

I suspect that increasing the TX Delay will *not* fix that problem.
Since at greater than 50 watts, you hear relays clicking indicates that
the K3S COR is being activated.
The solution is to either move your RX antenna further from the TX
antenna or use some device that disconnects or grounds the RX antenna
while transmitting.

73,
Don W3FPR

On 11/13/2017 7:26 PM, Steve Steltzer via Elecraft wrote:
> Here's the setup : 3 month old K3S. Full wave 80 mtr RX loop. Closest
point to TX antenna is around 200 ft. Over 50 watts I hear relays
clicking and stations have a hard time breaking in even using QRQ plus.
I assume the RX antenna is not switching fast enough and I'm getting 
milliseconds of high RF into the front end and protection relays are
kicking in???

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Re: [Elecraft] K3S RX antenna switching questions

2017-11-13 Thread Don Wilhelm 

Steve,

I suspect that increasing the TX Delay will *not* fix that problem.
Since at greater than 50 watts, you hear relays clicking indicates that 
the K3S COR is being activated.
The solution is to either move your RX antenna further from the TX 
antenna or use some device that disconnects or grounds the RX antenna 
while transmitting.


73,
Don W3FPR

On 11/13/2017 7:26 PM, Steve Steltzer via Elecraft wrote:

Here's the setup : 3 month old K3S. Full wave 80 mtr RX loop. Closest point to 
TX antenna is around 200 ft. Over 50 watts I hear relays clicking and stations 
have a hard time breaking in even using QRQ plus. I assume the RX antenna is 
not switching fast enough and I'm getting  milliseconds of high RF into the 
front end and protection relays are kicking in???

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[Elecraft] K3S RX antenna switching questions

2017-11-13 Thread Steve Steltzer via Elecraft 
Here's the setup : 3 month old K3S. Full wave 80 mtr RX loop. Closest point to 
TX antenna is around 200 ft. Over 50 watts I hear relays clicking and stations 
have a hard time breaking in even using QRQ plus. I assume the RX antenna is 
not switching fast enough and I'm getting  milliseconds of high RF into the 
front end and protection relays are kicking in??? 
Will increasing TX delay help this? If so, how much can I increase it from the 
factory setting of 008 before the keying gets choppy running 50 to 60 wpm? Are 
there other settings that would affect this? I also run an Acom 2000A from time 
to time, which has pin diode T/R switching and, according to reports, does QSK 
perfectly at those speeds. I don't want to mess that up either.
Thanks,Steve, WF3T

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