Test Points in cobra 148gtl

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frogman296
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Test Points in cobra 148gtl

Post by frogman296 » Saturday 31st Jan 2009, 16:42

okay i have a cobra 148 gtl...mb8719....

i want to put this radio on frequency...a question i have...

where are the test points?? i cannot see them on the board.

is there anybody who has a list of all the test points, and their locations, for this radio??

1096
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Re: Test Points in cobra 148gtl

Post by 1096 » Friday 27th Feb 2009, 12:39

They are just below the transformer on the right side about midway down.... A purple and I think it is a green wire are attached to them.... These are not like the test points in the 3600 and 6900 board radios, these are 2 small pegs sticking up from the board and the wires slip over the top of them....

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Re: Test Points in cobra 148gtl

Post by frogman296 » Saturday 28th Feb 2009, 2:47

so are these the only two that are important??

i have since found a diagram that lists em

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Re: Test Points in cobra 148gtl

Post by 1096 » Saturday 28th Feb 2009, 10:46

yes, these are the only 2 needed to bias the driver and final.... I believe there are others for PLL and noise blanker too....

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Re: Test Points in cobra 148gtl

Post by frogman296 » Tuesday 3rd Mar 2009, 8:09

thanks a bunch 1096

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Re: Test Points in cobra 148gtl

Post by zodiac » Tuesday 3rd Mar 2009, 12:26

I thought you wanted the test points for adjusting the frequency not the bias.
You should find the information your after on CBTricks under radio information.
How far is it.
Twice it's length from halfway.

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Re: Test Points in cobra 148gtl

Post by frogman296 » Tuesday 3rd Mar 2009, 12:37

zodiac wrote:I thought you wanted the test points for adjusting the frequency not the bias.
You should find the information your after on CBTricks under radio information.
i have since found them on the site...

thanks for the heads up though

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