Group,
This is off topic and I would deeply appreciate any responses to be
sent to me off list. I am posting here because I respect the
knowledge and experience of the people who are members of this
reflector.
This may sound stupid but I have not had experience with this before,
so I ask before
Hi Greg,
I have that arrangement here, with dual switching.. I don't run the amount of
power you do, but have tested the isolation... of the switches, and am
concerned about the amount of power that is allowed into the rx of the unused
stations... I cured part of that with the grounded
Greg,
Theory says you should not have any problem. With 60 dB isolation and
1000 watts, there may be as much as 1 mW at the input of each receiver -
that is 223.6 mV, which is a large signal, but still within the power
handling capability of most receivers.
In the practical world, if there
Hi Greg,
This might be a good question to post on the contest reflector. Stations
like KC1XX, K1TTT, W3LPL, etc all deal with such issues with their
Multi-Multi stations.
I like Alpha Delta switches and don't think you'll have a problem with them.
You could look for Bird switches with higher
I had the very set-up you are considering building - also using the 4 position
Alpha Delta switch. I am now converting back to a modified manual set-up.
Why? the Alpha Delta switch developed a fault -- if you open it up you will
find that the mechanism is a thin strip of metal which is pressed
To the many of you who took the time to give me excellent advice,
confirmations of my ideas and things to consider and think about,
thank you, thank you very much.
I have sent emails to each of you who sent me private emails and would
like to say thank you here as well to the folks who responded
Don,
Does it matter if the rigs not in use are turned off? I assumed that
they would have more immunity to overload if the unused rig was not
turned on. The Alpha Delta instructions says the switches are meant
to be used for switching multi antennas and one rig or multi
receivers. They
Rick,
I do not believe it makes much difference whether the rigs not in use
are turned on or off. Any damage would occur in the preamp or mixer
stages in most cases, and the devices are sitting there with their
inputs connected whether power is on or off, but there also may be some
T/R
You may want to check out the products from TopTen. They are a little
pricey, but they are what are used by many of the Multi-Multi contest
stations to share six antennas with 6 high power operator stations. I just
purchased one of their A/B switches to switch a single antenna between my K2
and
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