FT-817 Power Supply Question

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ThomasMcKean

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Hi guys. I am pondering an FT-817 for QRP and code. I have been researching it and I have seen that while it does take batteries, they don't last long. That is to be expected.

I have seen reports of some people saying they were able to operate the radio with a wall wart. I have looked online and I have not found anything. Can someone point me to a wall wart that would be suitable for the FT-817?

TIA... :)
 

vagrant

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KG4NEL is correct that a new radio should come with both the AC adapter and the DC cord to connect to a power supply or battery.

I have an 817ND and mine came with both of those noted items. My AC power supply was the older NC-72B and it works fine to power the radio and charge the battery. You can find various accessories here: Yaesu FT-817ND, Yaesu FT817ND

The batteries do not last long, but there are some things you can do like turning off the light on the display, although that does not help at night. It really depends on how you are going to use the radio and if you will need a foldable solar panel, more batteries, etc. You might be best served to pickup a 5 or 7 Ah battery and use the supplied DC cord to power your radio. Theoretically, the 7 Ah will last four times longer than the supplied 1.4 Ah battery, but the tradeoff is the additional battery weight.

It's a fun radio and I enjoy using it with digital modes.
 

sloop

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The supplied pwr supply (NC-72B/C) is for charging....although you may use it for monitoring if not charging the battery. The unit requires 2.0 amp for transmit...high or low. I use a MFJ-1317 switching pwr supply. It comes with a plug for the units power socket and is filtered. I know that there are 'wall warts' around that are rated at 12 vdc @ 2 amp, but you really need 3 amps so your pwr supply won't overheat. I also own one of those wall warts and the dc from it has a tendency to have 'hash' on it when it gets hot.
 

ThomasMcKean

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The supplied pwr supply (NC-72B/C) is for charging....although you may use it for monitoring if not charging the battery. The unit requires 2.0 amp for transmit...high or low. I use a MFJ-1317 switching pwr supply. It comes with a plug for the units power socket and is filtered. I know that there are 'wall warts' around that are rated at 12 vdc @ 2 amp, but you really need 3 amps so your pwr supply won't overheat. I also own one of those wall warts and the dc from it has a tendency to have 'hash' on it when it gets hot.

K so yew can plug in the supplied adapter and listen. That makes sense. Yes. That's kinda what I thought. I wanted an AC option with this. I am sure I can find one. One guy has a DVE switching power supply that has a brick like the laptop computers have. He probably got it from a computer. I am terrible jealous. The supply is 12v 3a and it looks perfect.

I want one! :)

I looked at the MFJ-1317 but it gets bad reviews. :( Are yew happy with yours?
 

ThomasMcKean

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Are you sure you're not going to have a need for any more DC power at home?

A small Astron switching supply would give you several amps more in current capacity...

Astron Corporation

I do have a power supply here for my other radio stuff. Two of them actually. I think I'm good on that. I just wanted an AC option for out and about. Looks like the 4103 may be the way to go.
 

K7MEM

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I do have a power supply here for my other radio stuff. Two of them actually. I think I'm good on that. I just wanted an AC option for out and about. Looks like the 4103 may be the way to go.

If your interest is being "out and about", you might want to consider building something. I don't have a FT-817, but a friend of mine does. He is not very good at electronics, but he wanted something to let him use his FT-817 while hiking or off-roading. So I made a pair of battery boxes and a solar charger.

One battery box contained the charge controller and a bank of AAA NiMH rechargable batteries. I used AAA due to space constraints. The other box contained two AA NiMH rechargable battery banks. The switching was set up so that the FT-817 could run off of one battery bank while a different one was charging from the solar collector. A wall wart could also be substituted for the solar collector.

I used a charge controller from Cirkits (CirKits SCC3 Solar Charge Controller Kit). The boxes were black anodized aluminum project boxes (4-1/4" x 6") and the rest of the parts came from radio shack.

The FT-817 is a great rig. I used my friends rig for a while while I was building a PSK31 interface. PSK31 works great with just 1 watt. CW works good as well but don't expect too much on SSB. It works, but it is difficult to scare up a contact. Small portable amplifiers are available in kit for to help this out. I built a 80 watt linear for my friend that worked great. You may not want to use a linear while you are out and about, but it helps for home use.

Martin - K7MEM
 

dkf435

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Correction: The MFJ-4103 is what got the bad reviews. The MFJ-1317 (which the 4103 replaced) got very good reviews. Go figure.

Sigh.

I just remember one being out there, never bought one, found a 12vDC supply with the correct plug at Goodwill and it was made for a portable DVD system and it is half way clean on output. It charges and runs the 817. If it has noise try some chokes.

David Kb7uns
 

dksac2

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If your looking for a power supply for base use, I'd spend a little more and get one with 25 to 30 amp capacity. Your radio will never need that kind of amperage, but sooner or later you'll buy another radio that does. For portable use, a 12 ah battery should last quite a while, or even better, buy two and hook them up parallel. A 10 watt solar panel and low priced charge controller will go a long way to keep the batteries charged in the field.
Lots of options.

73's John
 
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