Yaesu ft817 (wideband mod)

Hi

Looking to wideband my yaesu ft-817 have any of you attempted this mod how difficult was it!.

Can this be done by software or is it a hard wire job?

Regards


Mike (m1ike)

Re: Yaesu ft817 (wideband mod)



As far as I am aware, there is no mod to wideband the TX on the 817. You can add an extra 500kHz per band but thats about it.

The mod is an hardware mod so get ready to open the radio and have your soldering iron at the ready.

the 817 can be widebanded via the pc but this is only the non nd version.. the nd version is a hardware mod in which the front needs to come off and solder joints messed with..

if im not mistaken its something along the lines of bridging a couple of solder spots on a solder pad of about 8 or 10 pads.

there are two mods on the net but im not sure which is correct..

billy

http://www.ussc.com/~turner/ft817pg.shtml

heres a site that may be of interest to you.. let us know if you pull it off i wouldnt mind mine doing for 5 megs..

i did get quoted £25 from W and S for the job so maybe thats an option..


billy

Yaesu ft 817nd

Hi Billy

Just checked the net. - I have found the mod you mentioned.

The mod shows the bridging across 4 solder joint and desolder the other.

I don,t have a problem with this - but again would just like to know the mod is sound and no problems!.

Thanks


Mike

Re: Yaesu ft 817nd



Thats the same mod I am talking about and apparently, it only extends the bands by 500kHz and does not give general TX.

Yaesu ft817

Hi Andy

Its the same mod - Also looking to fit the dsp module at the same time.

Its like anything, get all the correct infomation and away you go! -I am quite confident with a soldering iron in my hands, providing I have all the info! otherwise leave it alone.

Thanks again

Mike

Re: Re: Yaesu ft 817nd



not heard of it only opening it up that much.. iv not looked lately re the mod but i do know there are two mods that use different pads or different combinations of soldering/de soldering. both if i remember were reported to work.

im not sure if lee at lam does mods it may be worth a phone call just to clarify the corect way. or even W and S , not sure if you would get any joy though..

as i say iv not got round to doing the mod so i can only give limited advice....

anyway let us know if you dont mind as i may actually get round to doing it.. iv got a NOV for 5 megs but since getting rid of my other rig i cant use the band..

billy

BTW the W4RT one big punch is also a valuable addidtion on the 817 and along with an ssb flter works very well indeed.. mic fitted is better for the OBP i think as if its fitted inside the rig its on all the time ( pretty sure unless im mistaken)

Yaesu ft-817nd

Hi Billy

A call on Tuesday morning to either Lee or W/S will be a good idea.

As you say might not get an answer but its worth a go! - if I decide go ahead with the mod I will keep you up to date with the results

Thanks again

Mike

ok cheers mike, one thing i think i did read when doing the mod is when you take the front facia off be careful as there is a ribbon cable type thing that is apparently quite fragile..
again its some time since i was trying to find the mod out so this could of been something else..

good luck with it anyway..

billy

Yaesu ft-817nd

Hi Billy


I had an idea you have to take the front off! - also a mate phoned before and remembered something about the ribbon cables - but it was a long time ago so he said take care.

Thanks again for all your help - I will keep you posted


Cheers

Mike

Hi Billy

Making a couple of phone calls later today - I will let you the outcome of the chat.

Cheers mate

Mike

Is this what you meant ?

http://pgh-net.com/oes/ft-817-software-modification.html

Hi Ready Eddie

Great stuff on mod a couple of pic would be great help. How long did it take you to complete the mod from start to finish!!

I will keep you all up to date on the mod

Thank again

Mike

Hi Billy

Thanks for the info! - now time to get on with it.

Trust all went well with your mods

Cheers

Mike

This also

http://www.g4etw.org/ft857_soft_option.htm

Looks like a hardware modification is not necessary with this.

this one doesnt work apparently with the newer models already covering the extra portion of 40m which most will do now..

the software mods from what i gather will ONLY work on the non nd models, although i think i did read somewhere that someone tried this on the nd . the effects did take place till the radio was turned off then it lost it.

the nd seems by all account to be a hardware mod only with 2 mods i can figure out. one gives full rx and the other is MARS/CAP mod openeing only portions of frequency up..

iv not had chance to mod it yet mike, get on it soon i was waiting to try and be certain of which numbers to use but eddie has done a few and stated he uses the red so ill go with that..

billy

.

just looked at the 817 i bought that i know has no mods..

looking at the back of the facia with the vfo dial to the left side and the solder pads at the top..

the unmodded 817nd has pads thus..

OXXXXOOOO (X BEING SOLDERED AND O OPEN)

the modded 817nd has pads thus

XXXXOOOOO

so it looks like to do the mod from standard is simply solder pad number 1 ( starting the count from the left of the pads) and unsolder number 5.

billy

just tried into dummy load and it will tx on 5megs ,555 cb ect ..


the auto repeater shift has gone walkabout but im not into repeaters so no problem on that score..

http://www.kb2ljj.com/data/yaesu/ft-817.htm#1950

so using the red numbers in this link pads 9,8,7,and 6 should be closed and 5,4,3,2,1, open..

Hi Billy

Well I was told the radio had NOT been played with!!!!!!

On talking off the top cover the right lug was snapped off mmmmmmm OK - now for the bottom cover all fine and the front facia came away with very little effort although one earth tag was bent at a funny angle.

Found the mod the radio has been wide banded?? some time ago note:- the solder was dark the shine as gone.

So using the red numbers this is how the pads are linked - 8,7,6 and 5 are closed - 9,4,3,2 and 1 are open

The radio was not config to wind banding - although I have not reassembled the radio or gone for a power up whist pressing F and V/M turn on the power.

On the reds jumper no-5 JP4005 have you any ideas as to its function although the radio works fine BUT today I plugged in a new DTMF MH-36E8J the functions on the mic do not work.

Have you any throughs/ideas.

cheers mate
73

Mike

hi mike what you describe above is the unmodded state. or this is how my untouched radio is..

i have been round the web and there seems to be some debate about what does what and what number sequence to use. these differing ideas all come from people that purchased radios from different parts of the world..

i found another link which states the mods we have loked at may not work and he has his own thoughts as to which way its supposed to be done..

http://homepage.ntlworld.com/pnowland/FT-817.htm he states open J5 and close J9 WHICH IS WHAT I FOUND CORRECT.. ( again using red numbers)



if i do my other i think i will go with the same as the mod on the other radio i have.. i feel confident especially now iv seen the sequence on my already modded radio that the red numbers are correct and with the pad sequence i described earlier..

as for J5 i hav no dea mate..

billy

Hi Billy

My fingers in knot changed a word around - now reads as it is inside the radio.

cheers mate
73

Mike

Any update on this as I have just got 1 and very intersted in the mod mine is the ND version..

SORTED :D

Hi Gary

Job done - nice one - all ok this end.

Regards
73

Mike

are the pads i described correct.. i assume they are as this 817 is fine ..

billy

Tip Top well done.
All I done was solder pad 9 and unsolder pad 5. Pad 9 is on the left pad 1 on the right. Mine is the ND version.
Also had a tweak in the service menu :cool:

Hi Billy

Job done - all works fine - needed:- reading gla***s, desk mounted backlight mag glass also small hand lens all at the same time eyes not so good.

At first I thought the pads 1 to 9 should be all open, my mis-understanding also the broken lug made me think the top had been off the radio, "WRONG Mike" that is how jumpers are set mmmmmmmmm ok and as for the lug same difference.

Next job to fit an internal dsp module.

Thanks again Billy, Eddie & Gary (next round on me)

Very best 73

Mike de m1ike

iv never got on with dsp really, i have had a few dsp speakers and my old 703 had one but i didnt like the sound of the audio when on..

i get on fine just using IF shift

billy