FT817, 818 PowerPole® Adapter

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Powerpole Adapter for the Yaesu FT-817 and FT-818 (includes Powerpole lead)

The FT-817 is a great radio but it does have a few weakness. A common problem that users encounter is the failure of the DC input connector on the rear panel. In use any stresses and strains from the power lead tend to make the DC power socket in the radio shear off the printed circuit board causing intermittent operation which usually leads to total failure. The socket is a surface mount item and thus is hard to replace - and even if replaced, it is likely to fail again.

This neat adapter, from Jon N0WL, screws to the rear of the FT-817/818 and removes any strain from the connector. It is fitted with PowerPole connectors (of course). We supply it with a ready-made lead with a PowerPole connector already fitted. Lead length approx. 1 m = 3 ft. Fitting time for the adapter, about 3 minutes (and that's only if you take time finding your screwdriver). An easy upgrade that will save you money in the long run.

This adapter is suitable for all models of the FT-817 and also fits the FT-818.

  • This is simply the best power solution for the most popular portable ham radio on the market!
  • Its compact design allows it to become a permanent part of your FT-817, FT-817ND or FT-818
  • Quit worrying about voltage drop on the stock adapter's low gauge wire
  • No more broken barrel plugs stuck in your radio.
  • Simple to install:  Just put the plug into the radio while placing the plastic shell over the radio's ground post. Then screw in. You can still use the screw to ground your radio.
  • The hard-plastic 3D printed shell protects the PowerPole® and barrel plug while staying within the footprint of the rear of the radio. 
  • Fabricated with genuine Anderson PowerPoles® and other quality components.
  • Includes extended length grounding screw.
  • Made of durable plastic. Click here for details.

Occasionally the adapters may be a tight fit on the FT-817. If this is the case the mounting hole can easily be opened up by hand with a 7.5mm (19/64th inch) drill bit.

Comments from the manufacturer on using these adapters with the FT-818 

"People are slowly discovering the actual differences between the FT-817 and the FT-818.  I have been made aware (and verified myself) that Yaesu changed the battery charging circuit in the FT-818.  As a consequence the FT-818 draws about 4mA from the internal battery when an external power plug is attached to the radio, the radio is powererd off, and the external source is not powered.  This current will drain the internal battery in less than a week.  But be aware that both the FT-818 and FT-817 have a current draw of about 0.2mA all the time - even without an external power plug attached - and that the internal battery will always completely drain in less than 2 months.  This applies to any plug, even the original one supplied with the radio. 

While not directly related to my adapter, it does call into question how best to use the internal battery of an FT-818 and whether it is a good idea to permanently attach the adapter to an FT-818 if the user intends to use the internal battery.  

My conclusion for the FT-818 are: 

1. Because of internal leakage current in the FT-817 or FT-818, users should never store the radio, even for a day, with a battery connected (internal or external).  Rather, they should charge the battery and then immediately unplug it.  Doing anything else will risk permanent damage to the battery. 

2.  Keeping any external power cord plugged into the FT-818 will accelerate the problem for users of the internal battery.  This includes the PowerPole Adapter. 

3.  Keeping an external power cord plugged into the FT-817 does not increase the leakage current, but the advise from #1 above is still the same."

Click here to see our other accessories for the FT-817, FT-818.  


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53 Reviews Hide Reviews Show Reviews

  • 4
    FT817 Powerpole Adapter

    Posted by Richard on 28th Apr 2019

    This is a brilliant idea which is well executed. However, I use strain-relief boots on my Powerpole connectors and there is insufficient clearance between the connector and the rear of the FT817 for a satisfactory connection. The housing could be made up to 5mm deeper before the radio's footprint is exceeded. Moving the connectors 3mm further away from rear panel would be ideal for all.

  • 5
    Powerpole for FT 817

    Posted by Anthony Enright on 20th Apr 2019

    Great addition to this little rig, solves problem of delicate power socket prematurely failing.

  • 5
    Powerpole FT818

    Posted by Jon Downes on 8th Apr 2019

    Nicely made and easy to fit, great if your always an the move with the radio. Takes the strain off the rear socket. Nice kit.

  • 5
    Much better.........

    Posted by Richard on 18th Nov 2018

    I had a previous/different version (American) of the 817 power pole adapter which although worked was more work involved in building it and more to the point was bigger which caused slight issues in connecting into the accessory sockets etc.
    This SotaBeams version is much much better and although a bit pricey I am glad to have upgraded to this.
    My hole home, portable and mobile radio equipment rely on using power poles so this is a very worthwhile investment.
    73, Richard de 5B4AJG.

  • 5
    FT817, 818 PowerPole® Adapter

    Posted by Malcolm Richardson on 1st Oct 2018

    well worth the money for the convenience of not having to find my 817-specific cable, now I have lots of DC cables to choose from.

  • 5
    FT817/818 POWERPOLE

    Posted by Jim on 13th Sep 2018

    Brilliant idea fits like a glove

  • 2
    FT-817 Power Pole Adapter

    Posted by Pete G0GWI on 5th Sep 2018

    The Bad Points:

    1 - Overpriced for what it is.
    2 - Required modification before it would fit my 817ND, the hole in the adapter needed to be wider to allow it to fit over the radios ground post.
    3 - It wouldn't fit flush to the back of the radio as the moulding snagged against the rear foot of the radio, judicious use of a small file solved that issue.

    The Good Point:

    1 - Despite my findings above, I still consider it a worthwhile investment particularly if the radio is used in the field. The cost to replace a detached power socket will be a lot more than the price of the adapter. The adapter could save you some heartache.

    [Admin: Thank you for taking the time to review the FT-817 PowerPole adapter. We are pleased to hear that you found it a worthwhile purchase.

    We were recently made aware of some issue affecting the mounting hole and its ability to fit flush to the back of the radio, and we have been making steps to check and amend (if necessary) each adapter before it reaches our shelves. So far, this has proved successful but some earlier adapters slipped through the cracks before we were aware of the issue.]

  • 5
    FT817, 818 PowerPole Adapter

    Posted by Declan McLaughlin on 16th Aug 2018

    Much better than the Yaesu plug. Does help to have the PowerPole Crimping tool when replacing the Yaesu Charger plug with PowerPole connectors.

  • 5
    Powerpole adapter

    Posted by William Sefton on 8th Aug 2018

    A must for any FT817, ND or 818 owner. A well designed and engineered answer to the weak power socket that can (and most likely will) fail. Fit and forget...