Author Topic: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX  (Read 4629 times)

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Offline Radio Tech

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#32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« on: March 02, 2016, 11:27:37 am »

In this video we take a look at another 621 with no 220 MHz receive all the way from Manchester Maryland. We do not have

any service info for the 220 band board so we go to the white board and draw it out. Links below





Kenwood TM-721 service manual:
http://www.repeater-builder.com/kenwood/pdfs/tm-721-svc-man.pdf

For more ham radio and tech tips please visit my friends:

Mr. Carlsons Lab
https://www.youtube.com/channel/UCU9SoQxJewrWb_3GxeteQPA

TRXBench
https://www.youtube.com/channel/UClqWe58x9q6jx61gB16731A

Offline voltz

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #1 on: March 02, 2016, 12:21:34 pm »
I do like your videos :) Another good job. Hope you got your IFR y offset sorted too, looked ok in the video.
 

Offline Radio Tech

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #2 on: March 02, 2016, 01:19:13 pm »
I do like your videos :) Another good job. Hope you got your IFR y offset sorted too, looked ok in the video.

Thanks for your comment.
I fixed the issue with the IFR in video #31 incase you missed that one.

https://www.eevblog.com/forum/other-blog-specific/31-ifr-1200-service-monitor-problems-and-fixes/

Offline AF6LJ

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #3 on: March 02, 2016, 11:00:41 pm »
Good Deal. :)
Sue AF6LJ
Test Equipment Addict, And Proud Of It.
 

Offline Radio Tech

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #4 on: March 02, 2016, 11:22:10 pm »

Offline RobertoLG

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #5 on: March 03, 2016, 10:33:17 pm »
this one was kinda simple, but keep going  :-+
 

Offline Radio Tech

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #6 on: March 03, 2016, 10:56:10 pm »
this one was kinda simple, but keep going  :-+

Yep, I do these in my sleep  :-DD
Will get some tough ones real soon...

Offline RobertoLG

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #7 on: March 03, 2016, 11:18:46 pm »
this one was kinda simple, but keep going  :-+

Yep, I do these in my sleep  :-DD
Will get some tough ones real soon...

hehe, but it's cool to see how it's done in such detail, people that are learning how to solder can get a huge benefit from that, as the troubleshooting itself, and as reference, soon you will have a crowded channel, you will see :)
 

Offline Radio Tech

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Re: #32 Random ham radio repair Kenwood TM-621A no 220 MHz RX
« Reply #8 on: March 04, 2016, 12:24:04 am »


hehe, but it's cool to see how it's done in such detail, people that are learning how to solder can get a huge benefit from that, as the troubleshooting itself, and as reference, soon you will have a crowded channel, you will see :)

For me that is what it is all about. helping folks that are just starting out.  One reason why I try and keep things simple without throwing out all the technical stuff.  When I first started out many years ago there was no internet, heck not even computers for the public lol. I had to learn from thrown out magazines and what ever books I could find.

Thanks for the support Roberto


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