I just purchased a Coaxsher RCP-1 Pro radio chest harness so I can more easily carry my GPS, radio and SPOT. I've used radio chest harnesses in search and rescue (SAR) but was not familiar with the RCP-1 harness by Coaxsher. I purchased it based on a discussion with the company, which is located in Washington state. I specifically was looking for a harness that held the items I wanted easy access to, but also wanted to be able to conceal a firearm (in SAR we are allowed to carry but only concealed, if we have a concealed carry permit). After discussing the harness with a representative at Coaxsher, who has a full-size semi-auto pistol I was assured my 1911 .45 would fit in the main zippered compartment.
I've had a chance to get everything in the harness I wanted, GPS, radio, SPOT, and a handgun or binoculars in the main compartment. I haven't used it in the field yet but the harness is very well constructed and provides very good support even with all of my stuff in it. The main compartment will also hold my topo maps which is great. The straps also do not get in the way of backpack straps, so you can keep easily accessible stuff in the harness while backpacking (i.e., topo maps, pen/pencil, etc.).
If you are interested in carrying these types of items, I feel this radio harness is likely to provide what you need. It seems to do exactly what I need it to do and I'm happy with the purchase.
Here is their website, the RCP-1 Pro specifically : http://www.coaxsher.com/radio_chest_harness_rcp_1_pro.html
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