KPG-4 Schematic

Forum dedicated to discussion on Kenwood Commercial Radio products

Moderator: willbartlett

KPG-4 Schematic

Postby KF4SQB » Thu Aug 25, 2005 3:22 am

OK, for all you who might need it, here is the schematic of the Kenwood KPG-4 programming adapter. This is an adapter I designed and built by making a few minor changes to someone else's design. The biggest change I made was the use of the Maxim MAX233CPP instead of the MAX232 IC, because the MAX233 chip doesn't need external 'charge-pump' capacitors like the MAX232 does. I also added a bridge rectifier to the power supply input. I like doing that because it makes circuits such as this immune to 'reverse polarity mistakes'.

If anyone finds any mistakes I made while making the schematic, let me know, and I'll fix it. Enjoy!

Image
Last edited by KF4SQB on Fri Sep 16, 2005 12:49 am, edited 1 time in total.
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

Postby KF4SQB » Fri Sep 16, 2005 12:42 am

Here is also the schematic of the plugs for the KPG-22 programming cable used with some Kenwood portables. It uses the same circuitry as the KPG-4 shown above. As with the KPG-4 schematic, if anyone finds any mistakes, please let me know so I can correct them.

Image
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

kpg4

Postby ka7wnf » Sat Oct 15, 2005 11:59 am

Hey Brett, where did the pictures go?
User avatar
ka7wnf
 
Posts: 358
Joined: Mon Aug 30, 2004 1:37 pm
Location: Seattle, Washington

Postby KF4SQB » Sat Oct 15, 2005 2:54 pm

Don't know. The board appeared to have some linking problems or something for a while there. They are appearing fine for me at the moment, but your mileage may vary. If you continue to have problems viewing them, and need the schematics, give me an email addy and I'll send them directly to you.
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

kpg

Postby ka7wnf » Sat Oct 15, 2005 4:28 pm

It's my stupid computer....
User avatar
ka7wnf
 
Posts: 358
Joined: Mon Aug 30, 2004 1:37 pm
Location: Seattle, Washington

programmer

Postby avtarsingh » Tue Feb 28, 2006 1:00 am

schematic looks great -

i use 6 from the radio - it has voltage on it

then you dont need an external source and dont have reverse polarity problems

would need an external pwr source for the HT version - but mobiles would work great without 1
avtarsingh
 
Posts: 10
Joined: Mon Feb 27, 2006 6:54 pm

Postby KF4SQB » Tue Feb 28, 2006 1:40 am

avtarsingh wrote:i use 6 from the radio - it has voltage on it


What level is the voltage at pin 6? I may go back and re-work it to include that feature. Thanks for the tip!
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

Postby avtarsingh » Tue Feb 28, 2006 9:12 pm

it's 12v

- just run the 12v into the 78L05 and also i suggest .01 caps on each side of the 78L05 just in case

i have been using this method for years - the max233cpp is a nice step tho - saves a few caps :roll:
avtarsingh
 
Posts: 10
Joined: Mon Feb 27, 2006 6:54 pm

Postby avtarsingh » Tue Feb 28, 2006 9:15 pm

oh also works on 80 series radios as well as 40 series

you still need a battery if you are doign the HT design

i am testing now (once i get my 690 going) - on making a female adaptor so that you can plug the kpg4 into a 90 series radio by unplugging the mic from the mic head - if you get what i mean
avtarsingh
 
Posts: 10
Joined: Mon Feb 27, 2006 6:54 pm

Postby KF4SQB » Wed Mar 01, 2006 12:57 pm

OK, thanks for the tip. 12v would indeed be easy to use as a substitute for the external power supply. I'll go back and work that into my schematic.

As for the adapter to use with the '90 series radio, I do indeed know what you mean. sounds like an idea to me 8) . I'm not familiar with all the different models of radios the KPG-4 is compatible with (or can be made compatible with). Give me a list, and I'll include that with the schematic as well.
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

Postby avtarsingh » Wed Mar 01, 2006 9:49 pm

i might have missed a few...but not many 8)

KPG-4
TK-7102, TK-7108, TK-8102, TK-8108, TK-760, TK-760GK, TK-762, TK-762G (VHF 8Ch), TK-768, TK-768G (VHF 128Ch), TK-780, TK-840, TK-840UF, TK-862, TK-862G (UHF 8Ch), TK-863G, TK-868, TK-868G (UHF 8Ch), TK-868G (UHF 128Ch),TK-940, TK-941, TK-840, TK-752, TK-759, TK-852, TK-859, TK-715, TK-815, TK-740, TK-705D, TK-805D, TK-706D, TK-806D, TK-630, TK-730, TK-830, TK-709, TK-809, TK-840, TK-760, TK-860, TK-762, TK-862, TK-760G, TK-860G, TK-780, TK-880, TKR-750, TK-885, TK-980, TKR-900, TKR-850, TK-7102, TK-8102, TK-7108, TK-8108, TK-768, TK-868, TK-768G, TK-868G,TH-F6,TH-F7

KPG-22
TK-240, TK-250, TK-260, TK-260G, TK-270, TK-270G, TK-272G, TK-278, TK-278G, TK-340, TK-349, TK349, TK-350, TK-353, TK-360, TK-360G, TK-370, TK-370G, TK-372G, TK-373G, TK-378, TK-378G, TK-430, TK-431, TK-630, TK-730, TK-830, TK-2118, TK-3118, TK-2100, TK-3100, TK-3101, TK-2102, TK-2107, TK-3102, TK-3107

KPG-46
TK-760 TK-760G TK-860 TK-860G TK-762 TK-763 TK-862 TK-768 TK-868 TK-780 TK-880 TK-980 TK-785 TK-885 TKR-740 TKR-750 TKR-840 TKR-850

KPG-36

TK280,TK380,TK480
avtarsingh
 
Posts: 10
Joined: Mon Feb 27, 2006 6:54 pm

Postby KF4SQB » Thu Mar 02, 2006 1:06 am

Thanks for the info. I'll include it with the schematic, with a mention of you, of course :grin: .
Brett Kitchens
KF4SQB


Image

kf4sqb "at" wetsnet "dot" com

Of all the things I've lost, it's my mind I miss the most.......
User avatar
KF4SQB
 
Posts: 166
Joined: Tue Dec 16, 2003 12:42 am
Location: Moultrie GA

Postby avtarsingh » Thu Mar 02, 2006 1:09 am

thanks

:eeek:
avtarsingh
 
Posts: 10
Joined: Mon Feb 27, 2006 6:54 pm

Postby znb10 » Tue Apr 11, 2006 10:06 pm

I am not very inclined to electrical work. Can I aquire one from someone besides ebay? Maybe ? you can email me mailto:znb10@yahoo.com
znb10
 
Posts: 11
Joined: Mon Mar 27, 2006 10:13 pm

Re: KPG-4 Schematic

Postby bd30907 » Sun Dec 07, 2008 1:43 pm

I have Kenwood TK-270G that I need to reprogram. Could someone send me the schematic of the Kenwood KPG-22 programing adapter.

What about program software for win Xp.

Thanks

Bill Dickerson
bd30907
 
Posts: 3
Joined: Sun Dec 07, 2008 12:55 pm

Next

Return to Kenwood Commercial Products

Who is online

Users browsing this forum: No registered users and 0 guests

cron