Power off settings: ANT1 / ANT2

[Nick Kennedy]

Speaking of the powering down housekeeping routines, here's one I
wondered about a while back.  Maybe it's a proposal ...

I generally just use the ANT1 connector and do my antenna switching and
disconnecting ahead of that, externally.  ANT 2 is currently connected
to my dummy load.  Assuming the antenna relays remain latched in their
last selected position when off, it might be a good enhancement to have
the rig switch to a defined position when OFF, as an option.  In many
cases, that could provide modest protection against lightning induced
transients entering the rig.

Not as good as disconnecting, but better than being solidly connected,
in my opinion.

73--Nick, WA5BDU

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[KK7P]

> ...Assuming the antenna relays remain latched in their
> last selected position when off...

The relays in the KAT3 are not latching.

73,

Lyle KK7P
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[wayne burdick]

Hi Nick,

There are no latching relays on the KAT3. It resets to ANT1 when
powered down.

73,
Wayne
N6KR

On Mar 1, 2009, at 5:34 PM, Nick-WA5BDU wrote:

> Speaking of the powering down housekeeping routines, here's one I
> wondered about a while back.  Maybe it's a proposal ...
>
> I generally just use the ANT1 connector and do my antenna switching and
> disconnecting ahead of that, externally.  ANT 2 is currently connected
> to my dummy load.  Assuming the antenna relays remain latched in their
> last selected position when off, it might be a good enhancement to have
> the rig switch to a defined position when OFF, as an option.  In many
> cases, that could provide modest protection against lightning induced
> transients entering the rig.

---

http://www.elecraft.com

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[Bob Naumann W5OV]

Nick,

With all due respect and caution, please don't think that allowing for
lightning to come into your radio with your radio's input being routed to
your dummy load is "better" or provides any level of protection whatsoever
over "being solidly connected".

The proper use of a lightning arrestor(s) OUTSIDE your home on all coax
lines and control cables is the only way to protect your station.
Disconnecting your feedline(s) and all control cables from your internal
shack wiring is a good idea too.

The thing to keep in mind is that your intent should be to keep lightning
outside your shack so it cannot do any damage.

When lightning comes inside, there is no limit on the damage it can cause
throughout your home.

73,

Bob W5OV


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Nick-WA5BDU
Sent: Sunday, March 01, 2009 7:34 PM
To: [hidden email]
Subject: [Elecraft] Power off settings: ANT1 / ANT2

Speaking of the powering down housekeeping routines, here's one I
wondered about a while back.  Maybe it's a proposal ...

I generally just use the ANT1 connector and do my antenna switching and
disconnecting ahead of that, externally.  ANT 2 is currently connected
to my dummy load.  Assuming the antenna relays remain latched in their
last selected position when off, it might be a good enhancement to have
the rig switch to a defined position when OFF, as an option.  In many
cases, that could provide modest protection against lightning induced
transients entering the rig.

Not as good as disconnecting, but better than being solidly connected,
in my opinion.

73--Nick, WA5BDU

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