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By the way, I want to use my Ultimates as portable units.
Having a separate antenna makes it possible to put the transmitter
in a strong metal box, but nearly all the 'recommended' GPS units
appear to have integrated antennas which need delicate surgery to the
case and make waterproofing more difficult. Any thoughts on that?

Dave,

I have another U2 here which I am also planning to use as a "picnic
portable" unit too ;-)

My current thoughts are that I am going to build the second UP501
module that I have into the same style enclosure as I have used for
my other U1 and U2's.

This would give me the space for:

* An 8 cell AA battery container. Dummy cells can also be used to
control the PA voltage. 2900ma Vapex NiMh cells are very cheap too.
?11 for 8 of them.




* 160m to 10m ATU built in like my others. Keeps everything self
contained.

* Cut a hole on the top of the enclosure to allow the UP501 (or
whatever your chosen GPS module is) to allow a clear RF view to be
seen by the GPS antenna. Now I have seen in the CPC catalogue
somewhere some nice little plastic units that could be glued or affixed over the module for waterproofing and physical protection.

I'm not sure what they call them, but I'll look them up tomorrow
in the works paper catalogue and post my suggestion on here.

It's much the same idea as G4JVF's answer. I think he has a set of
photo's on this group. Phil's plastic top looks a bit like the lid
off a jar of coffee - Phil ? ;-))

Just some thoughts...


73 de Andy

It's much the same idea as G4JVF's answer. I think he has a set of
photo's on this group. Phil's plastic top looks a bit like the lid
off a jar of coffee - Phil ? ;-))

Well spotted Andy, tis indeed a coffee jar lid :)

Good luck with your "picnic special"


Philip G4JVF

--- In QRPLabs@..., "Philip" <pcteee@...> wrote:

Well spotted Andy, tis indeed a coffee jar lid :)

Hee hee ! (See, I do observe!)

Coffee jar lids once used here too.
My first Top Band AM set up many years ago was a KW160 transmitter plus Lafayette rx. Antenna switch over between the two was a
coffee jar lid and a 1 pole 3 way switch poked through the lid
and screwed to the shelf.

Good luck with your "picnic special"

Cheers !

73 de Andy