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View Full Version : Malaysian Cobra 148GTL tune up



Foxtrot
05-22-2020, 08:07 AM
Hi Guys I wanted to tweak my 148. I found this procedure.
AM power is VR10. if running a linear, turn this down to 2 watts. if not, no more than 5 watts.
SSB power is VR11. turn this up to 15 watts, no more.
modulation is VR7. turn this all the way up, and dont clip any parts.

Is this correct?
And not to sound dumb. I can check the watts using the wattmeter on my swr meter with a 50 ohm dummy load on it and as I adjust ,keying the mike as I turn it up correct?

Thanks

whiteastro
05-22-2020, 04:27 PM
interesting read! https://www.youtube.com/watch?v=qlCcySR7YNY (https://www.youtube.com/watch?v=qlCcySR7YNY)

whiteastro
05-22-2020, 04:44 PM
be careful turning modulation up too high, you might cause distortion. A little at a time.

Foxtrot
05-23-2020, 03:27 PM
be careful turning modulation up too high, you might cause distortion. A little at a time. Thanks I will keep that in mind. I saw the youtube video it was a 29 ltd thats why I was trying to confirm with some one on it. I t looks like the pots are in the same place .I will give it a shot.

Odancoiler
05-26-2020, 04:06 PM
CBtricks.com should have what your looking for.
The watts sound ok.
Though as already said. Keep the modulation about 80%.
Then run a power mic.
I love the Astatic Mobile Max echo box. If you can find one.