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  1. #1
    Nigel nfmisso's Avatar
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    intercom - cheap - prdouct review

    We got this a few days ago, and used on yesterday's ride: http://www.amazon.com/GSI-Waterproof...ef=pd_sbs_hg_1 .

    It uses a pair of AAA batteries, and comes with a couple of ear buds with microphone booms.

    The good:
    * the box is small, we clipped it to the back of my shirt collar - at the label. Good location so that Diane could plug in/out when she got on/off, and I did not even feel it.
    * we could hear each other, even along the road with heavy traffic.

    The not so good:
    * the ear bud mic combo is intended to be velcro'd inside an full coverage motorcyle helmet - doesn't work so well on a bike.
    * the hook up (single three conductor 3.5mm plug) is different from our computer (Skype) head sets.

    We have ordered a couple of different kinds of headsets to try.

    You can also attach a CD/MP3/whatever to it for both people to listen to. We probably will never use that feature.

    Bottom line: great price, works well, but plan on spending some more money on different headsets. Even then, it will be a sub-$40- communications solution - a great bargin in my book.
    Nigel

    '80s SR Sierra Sport (commuter)
    '94 Trek T50 Tandem
    '90s GT Triple (gravel path bike)
    '85 Schwinn World Tourist (back up commuter)
    '82-'84 Miyata 310 (project)
    Jack Taylor tandem (project)

  2. #2
    Rod & Judy gracehowler's Avatar
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    Thanks for the info
    R&J

  3. #3
    Member
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    2013 Co-Motion Robusta, Litespeed Classic,Litespeed Bella
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    Kool...... keep us informed as to what "headsets" you try and work better with this set up. I might just give it a try!! Thanks

  4. #4
    Nigel nfmisso's Avatar
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    the two alternative headsets are problomatic. The Cellet handsfree comes with a 3.5mm TRRS plug - the box has a 3.5mm TRS - the ear peice speaker works great, the mic not. The Jabra C510 comes with a 2.5mm TRS plug and an adapter to a 3.5mm TRRS. Again, ear piece speaker works great, but no mike. Bought a 2.5mm TRS to 3.5mm TRS from Radio Shack - still no mic.

    http://www.amazon.com/Cellet-211555-...9642452&sr=1-5
    http://www.amazon.com/Jabra-C510-Cor...642483&sr=1-44

    Next step is to make an adapter where I can try different circuits or take one of the nicer ones apart to adapt the microphone. I am not looking forward to either option. Next trials will be in August when I get back from a long business trip.
    Nigel

    '80s SR Sierra Sport (commuter)
    '94 Trek T50 Tandem
    '90s GT Triple (gravel path bike)
    '85 Schwinn World Tourist (back up commuter)
    '82-'84 Miyata 310 (project)
    Jack Taylor tandem (project)

  5. #5
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    What I would do is work on the problem of getting the OEM ear bud/mic to work with a regular bike helmet. I don't think it is the circuit if you are getting audio. It is more likely some kind of impedance mismatch with the microphone. Modifying an expensive headset/mic IMO defeats the kool factor as there are probably existing tandem cyclist talk units that work, out of the box, for an equivalent amount of money.

    H

  6. #6
    Nigel nfmisso's Avatar
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    Mar 2011
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    '82 SR Sierra Sport, GT (green), Trek T50 tandem, Jack Taylor tandem, Schwinn World Tourist, Diamondback Pathway
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    So far, I have spent $15- on the original box, another $20- on different headsets/earsets and an adapter for $4 from Radio Shack.

    After discussions with the Rear Admiral; I am going to mechanically modify one of the new earsets to hold the original earbud/mic for her. For me, I found that the original one works pretty well with my helmet.
    Nigel

    '80s SR Sierra Sport (commuter)
    '94 Trek T50 Tandem
    '90s GT Triple (gravel path bike)
    '85 Schwinn World Tourist (back up commuter)
    '82-'84 Miyata 310 (project)
    Jack Taylor tandem (project)

  7. #7
    Nigel nfmisso's Avatar
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    '82 SR Sierra Sport, GT (green), Trek T50 tandem, Jack Taylor tandem, Schwinn World Tourist, Diamondback Pathway
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    After some issues; I took it apart, found a cold solder joint, reflowed, now works great all the time.
    Nigel

    '80s SR Sierra Sport (commuter)
    '94 Trek T50 Tandem
    '90s GT Triple (gravel path bike)
    '85 Schwinn World Tourist (back up commuter)
    '82-'84 Miyata 310 (project)
    Jack Taylor tandem (project)

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