<mailto:k6ll.d...@gmail.com>
Sent: Friday, October 27, 2017 2:05 PM
To: Reflector Elecraft<mailto:elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Failing K3 at 3C0L
Diode D5 on the KXV3 is one weak link. A more robust replacement
is available from Digikey for $0.42
https://marc.info
The testimony I can give for the toroids is that I built a K2 for a long
haul truck driver. It survived for several years in his truck with no
failures.
The only reason he had for for taking it out of the truck was that he
quit driving and got other employment.
73,
Don W3FPR
On 10/28/2017
In a temp multi-op environment it's all to easy to make a mistake. During a
W1AW op I changed bands by stepping my way there and didn't go quick enough
to avoid pausing on an active band and fried my D5 extra crispy (that was a
fun repair). After that all band changes were strictly direct entry.
The COR probably kicked in. The sub has its own protection for high
input signal levels.
73,
matt W6NIA
On 10/27/2017 9:43 PM, Edward R Cole wrote:
I accidentally connected the wrong BNC connector to my Aux Ant jack
with directly connects to my KRX3 IF and transmitted 28-MHz 1mw
briefly
While I've seen no evidence it was the cause of the 3C0L failures, I've always
wondered how long those toroids supported only by their leads could survive
vibration in transport.
73,
Scott K9MA
--
Scott Ellington
--- via iPad
>
I accidentally connected the wrong BNC connector to my Aux Ant jack
with directly connects to my KRX3 IF and transmitted 28-MHz 1mw
briefly into it. Suffered no damage and still works. whew!
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
dubus...@gmail.com
-Original Message- From: brian
Sent: Friday, October 27, 2017 10:35 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Failing K3 at 3C0L
I'm going out on a limb. I've heard that some other DXpeditions
had K3
failures in the RX section. RX dead TX OK. Apparently, the
protection
This is far too conservative, and a far too limited approach. I can
offer several examples.
At home, I have two 3-el 20M Yagis spaced about 130 ft, and regularly
use two K3s to drive two 1,500W amps. If I aim those two Yagis so that
their driven elements are approximately colinear with each
Subject: Re: [Elecraft] Failing K3 at 3C0L
I'm going out on a limb. I've heard that some other DXpeditions
had K3
failures in the RX section. RX dead TX OK. Apparently, the
protection
circuitry was not enough in the close quarter multi-transmitter
operations. It would be nice to know the details
: [Elecraft] Failing K3 at 3C0L
I'm going out on a limb. I've heard that some other DXpeditions had K3
failures in the RX section. RX dead TX OK. Apparently, the protection
circuitry was not enough in the close quarter multi-transmitter operations.
It would be nice to know the details
: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian
Sent: Friday, October 27, 2017 10:35 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Failing K3 at 3C0L
I'm going out on a limb. I've heard that some other DXpeditions had K3
failures in the RX section
I'm going out on a limb. I've heard that some other DXpeditions had K3
failures in the RX section. RX dead TX OK. Apparently, the protection
circuitry was not enough in the close quarter multi-transmitter
operations. It would be nice to know the details or if this or is just
rumor. If this
Here is the latest from 3C0L guys, and an insight to the K3 failures,
lot of negative comments on some lists, this puts it in perspective.
Regarding K3s - those who posted negative comments on DX-Cluster about
failing K3s, please bear in mind the conditions they were being operated
at 3C0
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