Cobra 148 swing mod

[MRH0TROD]

that guy that said he knew how to do that mod for the Grant XL could you
explain to me how it is done? I have never heard of the "purple wire mod"

thanks

[Justin K. Stahnke]

>that guy that said he knew how to do that mod for the Grant XL could you
>explain to me how it is done? I have never heard of the "purple wire mod"

anyone who wants info on the swing mod email me directly...and dont forget to
mention what radio you are refering to.
73's
Justin K. Stahnke (Radio...@aol.com)

[Mr. 137]

The mods that Justin Stahnke posted is the long way to get the 25 to 30
watts. The purple wire mod is the TP-8 wire for the newer GrantXL layout.
Find a 13.8VDC output point on the radio, solder the purple wire to that
point and there is your 25 to 30 watt mod (along with the usual modulation
modification and tune-up). Adjust VR-10 and VR-5 for your reasonable amount
of carrier and peak. I have seen 7-12 watts RMS from these radios before.
Mines do 7 watts RMS but I'm ok with that.

Some people say that this will cause the final to "burn-out" quicker. True,
but not true too. Reason being is everyone has this thing about
"Dial-A-Watt" variables. I see it as useless. When the carrier is turned
up and down and so on and so forth, the transistor is weakend because of
constant change in current flow. Where as my radios are set at 4 watts and
have performed flawlessly since '91. Plus, the audio is clean and crisp
because of the "fidelity" of its stock mic. There is no need for a Power
Mic to be used after this MOD is done.

This has not been a SECRET. Any good tech will tell you about this mod.
But then theres those who seen these mods done and seen the burned one's
come across their benches with this mod done to it. I've yet to see mine go
back to the bench. This is whats left of my two cents and then some.

137... back out!

[MC 10kW Jesus]

"Mr. 137" wrote:

> This has not been a SECRET. Any good tech will tell you about this mod.

Any truly good tech wouldn't dare do a "swing" modification to this, or any
other, radio any moreso than a good mechanic wouldn't put Slick50 into an
engine.

MC

[Mr. 137]

And why not? There is nothing wrong with this mod other than not doing it.

Besides, I don't use Slick50. But everybody has their own opinion.

137

MC 10kW Jesus wrote in message <3849B6B3...@hotmail.com>...

[Tempola Music Rolls]

Here is a neat little mod for the 148, 142, & Cobra 2000 GTL.

works great with linears, and causes no harm to the radio. You end up with
variable power on the SWR CAL knob, but don't loose the function of the SWR
bridge.

remove the VR adjustment for Am power.

remove the wires from the SWR _CAL, and tie the CAL circuit to where it is
wide open.

wire the SWR-CAL pot in place of the AM power adjustment.

This will give you variable wattage. the more you turn the control down, the
better it will swing. this WILL NOT give any more power though,But it's
handy if you run a amp. the SWR will still calibrate since the circuit is
still hooked up, the variable wattage will reach a point to still calibrate
the meter. Ideally, this should work with any SSB radio.

Hillbilly.
Missouri

[Garland Blake]

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