You can build a simple RF probe but you need to calibrate it. ?A simple SWR meter does not measure power over a wide range of frequencies. ?If possible, borrow a Bird 43 wattmeter from a local ham.

You can use that device to calibrate the power of your measurement equipment.

Check out kc9om.com. ?He sells some great kits and gives excellent service.

You can also build own watt meter using a Arduino UNO, a power tap and dummy load

See my rather crude video that I produced 4 years ago to see a demo of a talking watt meter.

It sounds like you need to look at the radios reference frequency/tcxo if it has it fitted,
Or the std module,
Dave 2E0DMB

the battery not installed

thanks for you reply
i have everything on display but the bands flashing dont work? only when i put voltage up to 14 volts some bands about 4 only become stable?

Flashes?? Does it indicate anything on the display?? HSWR, or something else?? Do you have a battery installed?
--
Al Skierkiewicz
WB9UVJ

Multimeters rarely will measure above a couple of hundred Hz.? You could use an RF probe and a dummy load.? I bought a Surecom power meter on Amazon a few months back for UHF and VHF.? They also make one for HF at about $65 on Amazon. ?
You will still need a dummy load.
--
Al Skierkiewicz
WB9UVJ

开云体育

Hello ,
Have you encountered this problem? my ft 817 worked very well for 2 years in digital mode, now it flashes on all bands if I increase the voltage towards 14 volts it stabilizes on a few bands.
thanks for your help
7s de OD5SB
Ramy FINGE

And don't forget to check the rf output on the 6 bands mentioned in the service manual in case a golden screwdriver has been in the alignment menus, there are 24 outputs in total that can be altered.
Andy

Measure the peak-to-peak voltage across a dummy load with an oscilloscope.

--
Mike G8GYW

A swr meter aint gonna give you a power reading is it, its gonna give you a swr reading, unless you get something like a cross needle power/swr meter or the like, as for the mulitmeter, err i dont think so.


Mick SA4MDN

Hello,

? Beside getting a SWR meter is there a different way to measure the actual power from the ft817? ?Could I use a multimeter?

regard,

Thanks for the info Steve. Sounds like the way to go.

Kevin Mullens

Kevin, The WindCamp Battery is Way OVERPRICED and one of the (3) 3000 Mah Cells will "Fail"even in conservative Use, I know I found it the Hard $ Way.
Real 3000 Mah NickelMetalHidride Packs are available at way lower COST (sometimes in a 3 Pack deal) then the ONE WindCamp unit and can be easily retrofitted by Using the wires from the OLD pack, and you can still Use The FT-817 as the "Charger" source Yes It Will Take A Bit Longer,and you can build a small slide switch into the battery cover. ? ? ? ?
Best Regards.
Steve AB2ET/4

Well it turned out to be the battery. It’s been working well for a while (10 months or so) but didn’t have enough poot for the radio to recognize it. I ended up putting my much larger 12ah that I use for my 891 on it and it came up fine. I also have brand new power pole connectors thanks to my buddy.
Problem solved.
73 all.
Kevin Mullens

Thanks John. I don’t have much use for the CW filters as I am an SSB op. Haven't used CW since my test haha. I think I’m going to skip the filter entirely. Doesn’t seem to make enough difference to spend the money on it.

Kevin Mullens

Hi all. I am experiencing a weird situation, I apologize ahead of time as I am a newbie to the 817.?

When I plug in an external battery the radio is not seeing it. I have a car power adaptor which it sees perfectly but for some reason it isn’t seeing the lifepo4 battery. I have checked the battery voltage and it is fine, I have a power pole adaptor on the radio but it is fine (car power cable is Anderson).?

I have checked the battery cable and it is showing both continuity and voltage on the Anderson connector going to the radio, nothing seems to be loose in the connection and I did check the contacts on both sides for corrosion and everything seems to be fine. I’m suspecting the power pole connectors even though they seem fine but I don’t have any to replace these with at the moment ?

Are there any settings that I am missing? ?It was seeing the connection yesterday just fine but not today. The onboard yaesu battery is suspect right now, I think it’s probably very weak due to age and I am planning on replacing it with the windcamp battery but would really like to know what I am doing wrong.?

thanks and 73
Kevin
K5KTM