Cobra 2000 GTL Clarifier Question.

[BigMike357]

I have a Cobra 2000 GTL that the Clarifier is not unlocked. I was reading on here where the Cobra 148 has a mod that does not extend the slide range it only unlocks the Clarifier it was posted by Nomad. Is there a way to unlock the Cobra 2000 GTL and keep stock Clarifier range?
Thanks Mike 35 Delta 357

 

[SuperLid]

I have a Cobra 2000 GTL that the Clarifier is not unlocked. I was reading on here where the Cobra 148 has a mod that does not extend the slide range it only unlocks the Clarifier it was posted by Nomad. Is there a way to unlock the Cobra 2000 GTL and keep stock Clarifier range?
Thanks Mike 35 Delta 357

Same as 148 GTL.

 

[BigMike357]

Same as 148 GTL.

I keep seeing that you have to take a wire off the fine Clarifier also?

 

[nomadradio]

The brown wire does come loose from the CCW lug of the fine control. That's because the brown wire connects to the receive-only 8 Volts and we're going full-time with the clarifier. As a rule, this allows a useful "fine" tuning range. To increase the coverage of the Fine knob, a resistor goes from the CCW lug where we pulled the brown wire, to ground. I don't do that a lot, so no exact resistance value is on file. I'd say start with a 10k resistor and see if that added too much range to the Fine knob. Higher resistance is a smaller coverage, smaller resistance increases it.

73

 

[Dr_DX]

Remove D75 & R188. You can also remove D52 if you want - it doesn't matter. Unsolder the other end of the Red wire on Fine from the Circuit board and solder it in the hole where the anode of D75 was (VR5 wiper). Solder a wire to pin 1 of IC4 (MB3756 - constant 8v source) and to the hole where R188 was that connects to VR5 and the lifted leg of R424 opposite the Fine Brown wire.

Center Fine & Coarse and adjust VR5 for Zerobeat in your preferred SSB mode. Do not adjust L22, L23, or L59.

Should have "stock" slide range. Fine & Coarse will be functional. All wires stay on the Fine Clarifier. We are just changing the RX only 8v to a constant 8v and using VR5 to "center" the Fine & Coarse pots.

Good Luck

 

[SuperLid]

My apologies, I overlooked the fine clar control.