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Tour Easy Recumbent: Amateur Radio HT Mount

Mary sewed up a new seat cover for her Tour Easy, so I dismantled the seat and cleaned things up. This is a good opportunity to show how I mounted an amateur radio HT on the bike…

Bottle holder on seat frame
Bottle holder on seat frame
Clamp mount detail
Clamp mount detail

The general idea is simple: a water bottle holder attached to the lower seat rail with a circumferential clamp made from a chunk of half-inch aluminum plate. An aluminum spreader adapts the wider hole spacing on the bottle holder to the teeny little clamp.

With the bottle holder in place, I put the radio in a wedge seat pack, atop a block of closed-cell foam to more-or-less cushion some of the bumps. The wedge pack seatpost strap secures it to the bottom of the holder and the rail straps wind their way through the holder and lash around the aluminum spreader plate. It doesn’t move very much at all.

The radio is a long-obsolete ICOM IC-Z1A, bought specifically for this purpose: it has a remote head on the end of a coily cord. That puts the power, volume, and channel buttons out where you can actually use them.

Radio in seat wedge pack in bottle holder
Radio in seat wedge pack in bottle holder

The lump behind the seat looks moderately suspicious in this day & age: a black package with wires! The grossly oversized red-and-black pair in the foreground is the power coming from a 6-AA pack attached to the rack with a Velcro strap; it’s a jumper with Anderson PowerPoles on both ends. Coily cord to the HT head, BNC-to-UHF adapter to the mobile antenna mount, one skinny cord to the headset and the other to the PTT button on the handlear.

Other pieces of the puzzle:

Comments

9 responses to “Tour Easy Recumbent: Amateur Radio HT Mount”

  1. DVD Player External Li-Ion Pack: A Pleasant Surprise! « The Smell of Molten Projects in the Morning Avatar

    […] Butcher the nice coily-cord cables to add Powerpole connectors that will click right into the bike radios […]

  2. Li-Ion Battery Pack for the Bike Radios « The Smell of Molten Projects in the Morning Avatar

    […] to hacking PowerPoles into the coily cable from those Li-Ion packs, suitable for powering the amateur radio HT on my Tour Easy. The cable has surprisingly fat conductors, on the order of 22 AWG, that (when doubled over) […]

  3. Adapting an Earbud for Bicycle Use « The Smell of Molten Projects in the Morning Avatar

    […] Improvements I favor a small cylindrical earbud with a good seal inside my ear for use with the amateur radio on my bike. These things come with back vents that allegedly improve their bass response; that’s not a […]

  4. Another Circumferential Seat-Frame Clamp « The Smell of Molten Projects in the Morning Avatar

    […] clamp is basically the same as the ones on our bikes, but I doodled up a sketch with some illegible dimensions that almost matches the actual clamp; we […]

  5. Tour Easy: Underseat Pack Repair Finished « The Smell of Molten Projects in the Morning Avatar

    […] the plate smacked firmly into the water bottle holder clamped to the rear of the seat frame for the amateur radio. Underseat pack vs radio […]

  6. GPS+Voice Interface for Wouxun KG-UV3D: Circuit Hackage « The Smell of Molten Projects in the Morning Avatar

    […] had my old ICOM IC-Z1A HT stop working, most likely due to the innards finally shaking loose, I replaced it with a Wouxun […]

  7. APRS Packet Routing « The Smell of Molten Projects in the Morning Avatar

    […] path from KE4ZNU-9 (on my bike in Pleasant Valley) to KB2KUU-13 near Lafayette, NJ, spans a bit over 90 km / 55 miles, which […]

  8. HT GPS+Voice Interface: ICOM Z1A vs. W32A vs. Wouxun KG-UV3D « The Smell of Molten Projects in the Morning Avatar

    […] that combined GPS data (from a Byonics TinyTrak3+ encoder) with the voice audio, all mounted on our Tour Easy recumbents; the interface also supported an external battery for radio power and lived inside a machined case. […]

  9. KG-UV3D GPS+Voice Interface: APRS Bicycle Mobile « The Smell of Molten Projects in the Morning Avatar

    […] holder attaches to the seat base rail with a machined circumferential clamp. Inside the holder, a bike seat wedge pack contains the radio with its GPS+voice interface box and provides a bit of cushioning; a chunk of […]