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Author Topic: Kenwood Trio TR 7800 Schematic  (Read 6457 times)
M0KRL
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Posts: 3




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« on: January 28, 2012, 09:40:40 AM »

I know this one has been mentioned before, but I have checked the old threads, and it appears that they all now have broken links. What I need is a circuit diagram, or even better a service manual for the TR 7800, I have downloaded the user guide, but the scan of the circuit diagram is too low resolution to be of much use,
 Many thanks in advance,

     Karl.  M0KRL
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W9GB
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Posts: 2659




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« Reply #1 on: February 02, 2012, 10:06:05 PM »

Kenwood (Trio) TR-7800 2-meter FM transceiover, 25 watts RF output
http://www.universal-radio.com/catalog/fm_txvrs/tr7800.html

Service Manual for this radio can be found at:
http://home.comcast.net/~aa4df02/download.htm

Kenwood TR-7800 Service Manual (ZIP file, 16 Mb) - Steve, K7LZJ
http://ftp://guest:guest@manualserver.dyndns.org/tr7800_7850_svc.zip

73 de
w9gb
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KF7LVF
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Posts: 3




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« Reply #2 on: January 29, 2013, 07:29:09 AM »

I am also looking for a service manual for a Kenwood TR-7800.

I am having no luck with the links provided.
« Last Edit: January 29, 2013, 07:42:23 AM by KF7LVF » Logged
W9GB
Member

Posts: 2659




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« Reply #3 on: January 29, 2013, 07:54:14 AM »

These Internet page links work, check your computer browser's (Internet Explorer, Chrome, etc.) operation.  
The download is FTP, and the file is compressed (ZIP), due to size.
http://home.comcast.net/~aa4df02/download.html

Here's a scan of the Kenwood TR-7800 and TR-7850 Service Manuals.
It is (about 16MB in size): TR-7800/7850 Service Manual
http://ftp://guest:guest@manualserver.dyndns.org/tr7800_7850_svc.zip

This was created here in our shop, and we respectfully request that it not be taken to eBay and sold to people who don't know any better than to pay out money for free internet download material.
The original manual was provided by the generosity of K7LZJ. Steve (K7LZJ) is in need of a service manual with schematics for the HP 8565A. If you can help him, please let us know or get with him via QRZ.
« Last Edit: January 29, 2013, 07:56:28 AM by W9GB » Logged
KF7LVF
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Posts: 3




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« Reply #4 on: January 29, 2013, 08:16:44 AM »

Thanks for the reply.

I have now tried on 3 different computers.  Two with two different versions of IE.  One with Chrome.

If it is a computer issue I will probably have to pay someone to fix it for me so I can get a free download:)  I so love technology...... sometimes.
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W9GB
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Posts: 2659




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« Reply #5 on: January 29, 2013, 10:47:36 AM »

Then I suggest you contact Steve, K7LZJ directly.  

It is possible that your Internet Service Provider (ISP) or
security software may be inhibiting your access to that web page (Comcast personal web pages: home.comcast.net).
« Last Edit: January 29, 2013, 10:50:25 AM by W9GB » Logged
KF7LVF
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Posts: 3




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« Reply #6 on: January 30, 2013, 08:28:54 AM »

Thank you for pointing me in the right direction.

I contacted Steve.  Very helpful gentleman. He has already provided me with a copy of the service manual I needed.
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G4FUT
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Posts: 88




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« Reply #7 on: January 31, 2013, 10:33:41 AM »

I don't require the manuals but tried to connect to those URLs without success.
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Even if the voices aren't real, they have some pretty good ideas
KA3PMW
Member

Posts: 1




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« Reply #8 on: August 01, 2013, 02:38:28 PM »

KF7LVF would you please tell me where I can get a copy of the TR-7800 manual?

Tnx, 73's

Ka3pmw
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W9GB
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Posts: 2659




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« Reply #9 on: August 01, 2013, 05:51:22 PM »

CONTACT: Steve, K7LZJ directly. 
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W9GB
Member

Posts: 2659




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« Reply #10 on: August 03, 2013, 06:12:16 PM »

Here is the information for the Kenwood TR-7800 2-meter transceiver.

The Kenwood TR-7800/TR-7850 are same basic radio.
The 7800 is the 25 watt model, and 7850 is the 45 watt model.
http://www.universal-radio.com/catalog/fm_txvrs/TR7800.html

Kenwood TR-7800 Service Manual
This will give you those pictoral diagrams -- that you likely need in addition to the schematic.
CONTACT Steve, K7LZJ
http://home.comcast.net/~aa4df02/download.htm

« Last Edit: August 03, 2013, 06:15:12 PM by W9GB » Logged
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