Yaesu FT-857D FT-897D 857 897 Frequency modification expansion

[BOHICA]

Succesfull Mod!

Hey Guys, I'm sorry for bringing back a post from the dead, however I just did this mod to my 857D that I bought in January 2011.

First off, THANK YOU for posting this! This is the only thread where I was able to find the correct version of the mod for my radio!

The whole mod took me about 10 minutes tops and it worked perfectly. One thing I will add is that I also had to reset the radio by holding the F and VM keys down while turning the radio back on. The initial reset of holding HOME and turning the radio on did not work for me.

I used a Radio Shack soldering station that I bought a set of tips for on Ebay a long time that had a perfectly sized tip to heat both pads at the same time to make the solder bridges without intruding on the pads or jumpers next to them. I think this is the same Soldering station made by Hakko but branded by Radio Shack. The tips were Hakko I believe.

I have verified TX on MARS freqs that I need as well as others and everything is working great at this time.


Thanks Again!

Steve

 

[Moleculo]

Glad it worked for you - that's why it's here

 

[SMILEX2692002]

897D

I have an 897D with the mod done. It looks identical to the pictures posted at the beginning of this thread.

 

[Captain Kilowatt]

To anyone attempting this mod, pay close attention to the solder pad numbers. IIRC they are not in regular numerical order.

 

[Happy_Hamer]

To anyone attempting this mod, pay close attention to the solder pad numbers. IIRC they are not in regular numerical order.

If you look carefully, you will see the solder pads are numbered from the factory on the board.

I put the arrows on to show the numbers

 

[dferg77]

Can anyone confirm that it does disable repeater shift or not. I would love to do
this but still need to use repeaters. Thanks

 

[Moleculo]

Can anyone confirm that it does disable repeater shift or not. I would love to do
this but still need to use repeaters. Thanks

It's been a while since I had this radio, but I don't recall that being a problem.

 

[shepsvettes]

mod

I did it on my new FT-857D and everything works great.

 

[dferg77]

Thanks for the reply's I guess I'll have too give it a try

 

[N3JTN]

FT-857d

I did Mod and lost my Auto repeater shift , oh well :-(

 

[jasondolan]

I am a bit confused with this, I don't understand why the jumpers are smd resistors when they could just be soldered. I'm going to show you my 897D, it's brand new, only one day old and I'm a bit nervous in case I take the wrong jumper off. They look huge on photos, but in real life these jumpers are really tiny. This is the UK version of the radio.
Are you sure I only remove jumper 2?.

 

[Shockwave]

I think the "0" on the top of those resistors means they are zero ohms. Sounds like a jumper to me.

 

[jestal]

Has someone compiled a chart that explains what each jumper does?
I have seen some charts but they don't really explain anything.

 

[jasondolan]

I have a good idea which jumpers. But I will leave it for now.
The radio has a problem with the power button, sometimes won't switch on and the relays just click inside when I press the power button, other times the relays click and the front panel flashes on and off. Maybe need a replacement.
I'll stick with my TS-2000X HF for now. I only wanted the 897D for the car.

 

[jestal]

I purchased the radio in April '2012.
I performed the FULL Mars mod per the Yaesu instructions.
Made no difference in HF. No Mars transmit.
I lost about the upper half of 2m and 70cm receive. (couldn't even tune to receive)
I have removed, and redone this mod a few times, and still the same result.

This time I have left the jumpers for VHF/UHF as original, and only jumped the 3 for HF.
Still no HF Mars transmit.

Yes, i held down [V/M] and [F]. Shouldn't that be [Func] instead of [F]?
Keeps resetting my memory every time as expected.

Is there something different with this radio that Yaesu USA doesn't know about?