KLM 2M-14C...waterproof the polarity switch?
Anyone out there with KLM antennas with the polarity switch care to comment on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
I'd put a little plastic or Tupperware box over it. The 70cm version that I have has only been used for Field Day, so it's not been outside much, but it definitely shows signs of having been damp. 73, Jim KQ6EA
--- On Tue, 10/13/09, David Wing david@cdwing.com wrote:
From: David Wing david@cdwing.com Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch? To: amsat-bb@AMSAT.Org Date: Tuesday, October 13, 2009, 12:37 PM Anyone out there with KLM antennas with the polarity switch care to comment on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Domenico I8CVS did it and I copied his method.
Pictures here mine:
http://picasaweb.google.com/ve4yz.alan/I8CVSWXProofKLM#
73, Alan VE4YZ EN19kv AMSAT LM 2352 http://www.wincube.ca
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of David Wing Sent: October 13, 2009 2:38 PM To: amsat-bb@amsat.org Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch?
Anyone out there with KLM antennas with the polarity switch care to comment on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
David the one I got the previous owner just put RVT all over it, except the RCA jack. I need to redo it, but it's raining, hi. The 435 yagi came with an aluminum box enclosure....wonder why they didnt do the vhf yagi the same ?? Course we'll never know as they are out of business.
John
----- Original Message ----- From: "David Wing" david@cdwing.com To: amsat-bb@amsat.org Sent: Tuesday, October 13, 2009 12:37:45 PM GMT -08:00 US/Canada Pacific Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch?
Anyone out there with KLM antennas with the polarity switch care to comment on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
if i remember correctly isn't KLM the predisessor (sp?) of M squared?
w6zkh@comcast.net wrote:
David the one I got the previous owner just put RVT all over it, except the RCA jack. I need to redo it, but it's raining, hi. The 435 yagi came with an aluminum box enclosure....wonder why they didnt do the vhf yagi the same ?? Course we'll never know as they are out of business.
John
----- Original Message ----- From: "David Wing" david@cdwing.com To: amsat-bb@amsat.org Sent: Tuesday, October 13, 2009 12:37:45 PM GMT -08:00 US/Canada Pacific Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch?
Anyone out there with KLM antennas with the polarity switch care to comment on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.421 / Virus Database: 270.14.14/2433 - Release Date: 10/13/09 13:25:00
Yes, it is. Jim
--- On Tue, 10/13/09, Joe nss@mwt.net wrote:
From: Joe nss@mwt.net Subject: [amsat-bb] Re: KLM 2M-14C...waterproof the polarity switch? To: w6zkh@comcast.net Cc: amsat-bb@amsat.org Date: Tuesday, October 13, 2009, 3:37 PM if i remember correctly isn't KLM the predisessor (sp?) of M squared?
w6zkh@comcast.net wrote:
David the one I got the previous owner just put RVT all
over it, except the RCA jack. I need to redo it, but it's raining, hi. The 435 yagi came with an aluminum box enclosure....wonder why they didnt do the vhf yagi the same ?? Course we'll never know as they are out of business.
John
----- Original Message ----- From: "David Wing" david@cdwing.com
To: amsat-bb@amsat.org
Sent: Tuesday, October 13, 2009 12:37:45 PM GMT -08:00
US/Canada Pacific
Subject: [amsat-bb] KLM 2M-14C...waterproof the
polarity switch?
Anyone out there with KLM antennas with the polarity
switch care to comment
on whether you have put a housing on the switch to
protect it from the
elements? It looks like the relay has silicon around
the base but it just
grates me the wrong way to have a circuit board with a
power connection and
components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of
anyone experiences.
If anyone has built up a housing and have pictures or
directions, please
pass them along
73,
David
K6CDW
Sent via AMSAT-BB@amsat.org.
Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur
satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org.
Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur
satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.421 / Virus Database: 270.14.14/2433 -
Release Date: 10/13/09 13:25:00
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
http://spaceflightnow.com/news/n0910/13tdrs/
as I recall there were 50 some odd pounds of ballast launched with the bird...to bad it wasnt an amateur repeater.
Robert WB5MZO _________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/
When I picked up these KLM's over in Lompoc, the fellow works at Vandenburg, and he told me that alot of the ballast is nothing but concrete !! Can you imagine all that concrete chunks out there and they know where the majority are....amazing.
----- Original Message ----- From: "Rocky Jones" orbitjet@hotmail.com To: "Rocky Jones" orbitjet@hotmail.com Cc: "Amsat BB" amsat-bb@amsat.org Sent: Tuesday, October 13, 2009 7:57:03 PM GMT -08:00 US/Canada Pacific Subject: [amsat-bb] Good story on TDRSS 1
http://spaceflightnow.com/news/n0910/13tdrs/
as I recall there were 50 some odd pounds of ballast launched with the bird...to bad it wasnt an amateur repeater.
Robert WB5MZO
_________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/ _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Yeap...it is generally either concrete or lead...and the concrete is favored..something in my memory says however the ones on TDRSS were lead. somewhere I probably have a picture of the ballast being attached to the "bird". Indeed I got a letter published in both AV Leak and Navy Times (as I recall) about the ballast...and "other" payloads. I also recall the IUS upper stage carried ballast as well....to bad it wasnt an Amateur radio transponder...lots of power on TDRSS 1.
Date: Wed, 14 Oct 2009 03:36:07 +0000 From: w6zkh@comcast.net To: orbitjet@hotmail.com CC: amsat-bb@amsat.org Subject: Re: [amsat-bb] Good story on TDRSS 1
When I picked up these KLM's over in Lompoc, the fellow works at Vandenburg, and he told me that alot of the ballast is nothing but concrete !! Can you imagine all that concrete chunks out there and they know where the majority are....amazing.
----- Original Message ----- From: "Rocky Jones" orbitjet@hotmail.com To: "Rocky Jones" orbitjet@hotmail.com Cc: "Amsat BB" amsat-bb@amsat.org Sent: Tuesday, October 13, 2009 7:57:03 PM GMT -08:00 US/Canada Pacific Subject: [amsat-bb] Good story on TDRSS 1
http://spaceflightnow.com/news/n0910/13tdrs/
as I recall there were 50 some odd pounds of ballast launched with the bird...to bad it wasnt an amateur repeater.
Robert WB5MZO
_________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/ _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/171222984/direct/01/
----- Original Message ----- From: "David Wing" david@cdwing.com To: amsat-bb@amsat.org Sent: Tuesday, October 13, 2009 9:37 PM Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch?
Anyone out there with KLM antennas with the polarity switch care to
comment
on whether you have put a housing on the switch to protect it from the elements? It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection
and
components exposed to the elements.
Maybe it has not been an issue but I'd care to hear of anyone experiences. If anyone has built up a housing and have pictures or directions, please pass them along
73,
David
K6CDW
Hi David, K6CDW
I have put a waterproof plastic housing on the switch both for the KLM 2M-14C and KLM 2M-22C In a separate email I have sent to you a zipped file with several pictures depicting the above modification.
73" de
i8CVS Domenico
At 12:37 PM 10/13/2009, David Wing wrote:
It looks like the relay has silicon around the base but it just grates me the wrong way to have a circuit board with a power connection and components exposed to the elements. ... Maybe it has not been an issue but I'd care to hear of anyone experiences.
By all means do SOMETHING. I did not originally, and I replaced a relay once, and then later I had the conductors etched right off of the board by electrolytic effects. I often left the 12v for the polarity control turned on, and when dew or whatever makes the board damp, current from the 12v flows thru the water, etching conductors away. (In my location we have dew every night just about year round.) Later I repaired the board by putting down wires where the traces used to be, and covering them with silicone.
I've heard stories over the years of many other people having these problems.
That board definitely needs some environmental protection.
participants (8)
-
Alan VE4YZ -
David Wing -
Franklin Antonio -
i8cvs -
Jim Jerzycke -
Joe -
Rocky Jones -
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