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Author Topic: Portable IC-7300 build-out questions  (Read 5945 times)
KM4SQS
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Posts: 1




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« on: March 19, 2018, 11:45:47 AM »

Hey guys,

I will be buying an IC-7300 most likely within the next week or so (before 3/31, to get the $200 rebate). As I am extremely antenna-limited at my current QTH, I am planning on building this out as a portable setup.

I'd love to rack-mount the IC-7300 into a 6U rack-case, with a speaker on the front of the rack-mount panel, a 30 amp switching power supply (should be ~3U), and a 3U drawer for extra accessories (connectors, antenna wires). Eventually, I'd also love to get some batteries/solar panels to run everything standalone, but that can come later.

A few questions:

1) Anyone have any good home-brew solutions for safely rack-mounting the IC-7300, a speaker, and a power supply? I saw this rack solution (http://r.ebay.com/vagi3x) on ebay, and while it looks nice, $285 + shipping for is a little more than I'm looking to spend for a pre-fab setup. For that price, I'll rather fab something myself.

2) Anyone have recommendations for batteries/solar panels for running the 7300 at 100w SSB for 3 or so hours at a time (50% duty cycle)?

3) Opinions on a portable multi-band antenna (preferably 160m-6m, but 80m-10m would work well). I've investigated the Buddipole and it looks promising, but I'd love some other options.
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K6JH
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Posts: 515




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« Reply #1 on: March 19, 2018, 07:06:02 PM »

That e-bay vendor sells the same rack for $100 less without the power supply- $185 for rack mount, w/speaker & magnetic mic holder:
(www.ebay.com/itm/ICOM-IC-7300-RACK-WITH-SPEAKER-MAGNETIC-MIKE-CLIP-3U-FOR-THIS-POPULAR-RADIO-/382082989684),
or $150 with a cutout for an ID-5100 also that you can patch
(https://www.ebay.com/itm/ICOM-IC-7300-RACK-WITH-ID-5100-APERTURE-SPECIAL-3U-WITH-RJ45-MIKE-JACK-EXTENSION-/162063140190).
Otherwise, if you fab your own rack take a look at the ICOM mobile mounting bracket first - it just grabs the radio with 2 screws on each side - pretty easy to fab up something similar.

30A Switchers (Mega-Watt copy of Mean-Well supply) are available at only $50 from http://www.12voltpowersupplies.us/ Is it worth it to you to save $50 by buying the rack without a supply?

If I had decent metalworking tools I'd do my own and get it exactly the way I want it.

My first thought was the 7300 would not be my first choice in a rig for battery longevity compared to something specifically designed to be portable, just because of those PLDs running in there. But it turns out the RX mode current drain of the IC-7300 is only 0.9A typical 1.25A max, which puts it in the running with pretty much everything else out there, except maybe a QRP FT-817. If you only need to run 3 hours go for it. Heck - maybe I'll get one!

I don't have any battery suggestions - I typically run my FT847 with a big marine battery I get from Costco. More capacity and cheaper than the fancy LiFe batteries now popular, but much  bigger and heavier. I got a Harbor Freight 45W solar panel (that doesn't put out 45W!) for charging. But for once a year at field day this combo works. Pick your poison.
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73
Jim K6JH
K0UA
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Posts: 4610




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« Reply #2 on: March 20, 2018, 11:54:57 AM »

My 7300 is such a nice radio I couldn't bring my self to take it portable. So I got a Yeasu 891 for that role. But the 7300 draws a bit less current on receive than the 891 though  The 7300 draws 1/4 of what my 756pro3 does too!

Good luck with your project.  73  James K0UA
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73  James K0UA
ARRL Missouri Technical Specialist
K5LXP
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Posts: 6144


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« Reply #3 on: March 20, 2018, 05:11:10 PM »

I am extremely antenna-limited at my current QTH,
...
I've investigated the Buddipole and it looks promising,

Using a buddipole would make you portable antenna-limited.  If you're going to gain any advantage by operating portable use an antenna that actually buys you something.  Think wire, think long.  Buddipoles are pretty expensive for what you get, not terribly effective and not terribly portable.  What problem do they solve?

Quote
Anyone have recommendations for batteries/solar panels for running the 7300 at 100w SSB for 3 or so hours at a time (50% duty cycle)?

3 hours of operation can easily be handled by a nominal SLA or marine battery without any panels at all.  Panels of any useful size are a pain to schelp around and set up, so I wouldn't bother with solar unless you plan on being off grid for extended periods.  I would look into operating/charging options from your vehicle before I'd bother with panels.

Mark K5LXP
Albuquerque, NM
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