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Yes, and presumably the 'new in box' FT-817 the OP got would have that issue... Ken, N2VIP

The self oscillation problem on the original 817 can be dealt with on the older original PA board interface by reversing the phase for the input to it, I've done that to each 817 that has landed in my

The original, FT-817 finals used transistors that are no longer available, so technically the rep was correct, BUT... The FT-818 has a (slightly) redesigned finals board that has a new, readily

Mike, Besides the normal "transmit into non-resonant/non-existing antenna, blow finals" issue a Z817 can help with, there is the "battery pack drains, the finals self-oscillate and fry themselves"

@ Al WB9UVJ ( /g/ft817/topic/power_output_instable/108372017 ) Thanks Al. That's what I was hoping for. No luck... Pietro I2OIM

Were these FT-818 finals or FT817? When I called a couple of months back, the service guy told me no 817 finals are available and none are planned on being made due to lack of transistors

I recommend getting the interface cable for it, if you don't have it, so it reduces power during tuning. Mike KA2JAI

I bought a finals board for my 817ND from Yaesu UK last month. It arrived in two days. -- Mike G8GYW

I recently got a new in box 817 non ND. I just got the z817 tuner. I sure hope I can protect the finals with this setup. Any protection suggestions? I don't think the first gen 817 can be repaired

I ordered them directly from Yaesu by phone. Mike KA2JAI

Who did you order them from? Sent: Friday, September 13, 2024 3:51 PM To: [email protected] Subject: Re: [ft817] Recent final board price / availability? I ordered 2 on Aug 7. I was told I

I ordered 2 on Aug 7.? I was told I wouldn't be charged until they shipped and to expect Oct delivery.? I received an invoice with a tracking number today. Mike KA2JAI

Thanks to both. I'll check the diodes I2OIM

Hi I had a 817ND that 2m tx was not working, I had to replace a diode, If you look for my post Dave 2E0DMB [email protected]> wrote:

Hi Peter, I had the same problem on the FT817 and I solved it by replacing the Q3003 and Q3005 HSU277 diodes. I hope this helps

@ Al WB9UVJ No, it neaver succeded. I check antenna connectio tryng wit a different one (2m/70/23cm vertical) and the problem remain. Some days it work at full power, other days it work bad with the

I didn't check it. The 2m bans works on the front connector, a will try. Tnx, 73 Pietro

Pietro, Does your display flash HSWR by any chance?? My 818 would do this from time to time.? I thought something was wrong with feedline, antenna or something else.? I examined everything.? As a

Does it do this on both front and rear outputs?

It happens *with any mode* on 2m and on all other bands everything works. I2oim