My only input is that heat rises, and the heat of the PS will rise and keep the
duplexer warm. I would be concerned that the heating of the duplexer (and
likely cooling at off-peak times or climate change) would cause the metallic
parts in the duplexer to expand and contract possibly throwing it out of tune.
maybe a longshot, but the possibility would be enough for me to mount the
duplexer farther away, or below the heat sources, or make sure you have some
sort of cooling "buffer" below it.
Also- when possible I like to lay the rack on its back when moving the heavy
components like power supplies. Easier to drop it in place and let gravity hold
it while you fasten the screws. I'm kinda a big guy (6'7" 300 lb) so muscling
the rack up and down for me is a one man job. Others will probably disagree
with this methodology, but it works for me.
Tom
W9SRV
Bill <[EMAIL PROTECTED]> wrote:
In the sprit of the only stupid question is the one that goes un-
asked.
Here goes:
I have a Micor UHF repeater mounted in a 46" x 19" cabinet.
It is now a ham band repeater that I have added a new NHRC-5
controller and IRLP interface. The modules are mounted as follows:
Top: Custom built 12V PA cooling fan rack controlled by the NHRC-5
aligned with the top door vents.
75W PA
Transmitter/ Antenna Network
Control module (mostly empty now replaced with NHRC-5 and mods from
this site)
Receiver module
Massive TPN1110B power supply
4" space
Bottom: WaCom duplexer cannisters (4)
I would like to put the power supply on the bottom so that it aligns
with the vents in the cabinet doors and I can add some fans to cool
the transformer (you can cook a grilled cheeze sandwitch on it) An
added plus is that it will make the cabinet more stable with the
weight on the bottom.
Is there any issues mounting the duplexers between the receiver and
the power supply with the powersupply on the bottom.
I hate to move things around and have problems.
And yes I will get help to lower the power supply and save some
digits. I know the best solution is to replace the powersupply with a
more modern one. I plan to do this when funds are better. When this
time comes who makes the best replacement powersupply unit? (ok two
Questions)
Thanks gang
Bill N5ZTW
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