I added some detailed pictures of the setup:
I am not intend to make any comments on this. i let the images spoke for me as one photo is worth for 1000 words.
The goal was to have a entirely portable (backpack) radio for both VHF and HF (20m band) complete with a resonable antenna in order to use it on vacation or in ditress situations.
The goal was achieved with my reserve radio (FT 8857D), a SLA 12V/7Amps battery and a home made antenna (from a old broken CB mobile antenna).
Questions are welcome! Altough, I will accept no comments on photo quality!!! HI During the main phase, the photos was taken with a mobile phone camera :-( as I left my Nikon DSLR to my workplace...)
Regards and Enjoy!
73! de yo3hjv
Rob, 2J0RZD has a nice similar setup! Keep it up Rob, nice job!
Below is the explanation for Bill, K7WCB:
I curently use a 7Ah SLA Battery for backpack operation. This allowed me to operate a entirely day with 15W on a moderate basis on SSB. For "rough" operation I also have a 12Ah SLA on the same width (it fits in the assembly). Because the battery is fixed with two strong tyre-up's, I can easily change them.
I never deplete the 12Ah battery, even the power was set on 25W.
The arrangement is, mainly, a support frame, as you can see in the pictures.
As I do not intend to use the radio in my car (I have a FT8900 for the mobile) I also used the supplied car support frame.
The backpack frame is in "U" shape and is made from alumminium.
In the lowest part of the U, I fixed the supplied car support frame. In this section, the SLA is placed.
The highest part of U is for the radio itself and for the antenna connector. The radio is fixed with 4 screws in the original places.
Between the radio and the U frame I place a spacer made from hard plastic (PVC-the white spacer in the pictures). You must pay carefull attention to the lenght of the screws!!! Max 4mm IN THE RADIO'S BODY, or you will damage the internal PCB!!!
The antenna UHF connector is placed on a small L shape alumminium and can be placed on the upper part of frame (for backpack) or in the lower part (for orizontally placed radio on table operation). In my pictures, that L shape is on the upper part of the frame and the holes are vizible in the lower part. I made more holes in order to allow me to change the angle easily.
If there are other questions related, i am happy to answer. Also, please excuse my bad english!
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