09 august 2013

FT 857D Manpack - revisited, ep.2

Yeap! It;s finished and it work!

Here are the promises pictures. Sorry for the quality but I only have a HTC mobile phone!

The second, third and fourth paintjob!  Nice black matte finish on the main frame.
Notice the lateral frames; made from aluminium, 2mm thick for keeping the radio and the ATU.

A plastic box. The plan is to put the fuses inside on a small PCB.

I have to put a bended aluminium tape to compensate for the smaller width of the ATU.
On the other side, the ATU is fixed on the lateral frame with the original screws. One of them was moved a little, around 10 mm to have the exact 8.9 mm between them, like on the FT857.

Here it is, assembled but with no battery.

A large aluminium was placed on the main frame; on it, I put the UnUn, the VHF/UHF antenna connector and the fuse box.

Remember? I told you that the antenna is a Harris foldable. This is the triple-use special connector. It accomodate the antena, can be used like a clamp for a wire antenna and also have a BNC connector inside. Nice job!
TNX YO3FWL for the antenna, will be use on this radio to make happy a fellow ham!

This is the SPG, the Al plate. On the right, is the VHF/UHF antenna connector. On the right, it's a small Hammond box with a selectable ratio UnUn (4:1 or 9:1) and also a bypass for othe antennas.
Between them, the plastic box with the 20 Amp fuse.

I hate the bulky Yaesu connector so I cut it and put other instead. It's a professinal one and on the radio side has two circuits. One for the FT857 and oter for the ATU. Simply disconnect them and, voila, no power!

Here will be the battery.

A little housekeeping. Put the wires around the pipes.

 Detailed view of the UnUn. Notice the switches for Bypassing and for ratio...

It was to late to film it on the test...
I will be back soon with the manpack in action.

73 de YO3HJV

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