President Lincoln on 12M ?

Is this possible without chipswitching the radio ?

Anyone got any experience with the chipswitch mod for the Lincoln ?

Change the crystals and yes can be no issues. Had one here that worked.

26000 on display was 24000
29000 on display was 27000

Other than that, yebbers its the chipswitch and then they call the radio the Lincoln Gold

Thanks for the info, quick google suggests that the chipswitch is only available through Bills2way, and he is about to close shop, was a quick google - meant to be fixing a printer queue at work lol.

RogerBird (link is here for you)

Try looking for Roger Bird or Daryl Adams they are the "inventors" or the brains behind the Lincolns, 2830's., 2510 or indeed 2600

Cheers Simon

Change the frequency band from 28.000 - 29.699MHz to 24.000 - 26.699MHz.
Replace X-tal X302 with 18.000MHz X-tal.
When the display light 28.XXX MHz it will be 24.XXX MHz.
When the display light 29.XXX MHz it will be 26.XXX MHz.

Change the frequency band from 28.000 - 29.699MHz to 26.000 - 27.699MHz.
Replace X-tal X302 with 20.000MHz X-tal.
When the display light 28.XXX MHz it will be 26.XXX MHz.
When the display light 29.XXX MHz it will be 27.XXX MHz.
Change the frequency band from 28.000 - 29.699Mhz to 26.000 - 29.999Mhz.
Locate TP307 (Resistor) and D312
Connect both together by wiring, thats all!

BandPassFilter Adjustment


President Lincoln and HR2600 is adjust for 28.000MHz to 29.699MHz. To broad band your radio after mod or changing ChipSwitch, it`s nessesarry to add a capacitor (220pF) across C26. (From right side of L307 (TP306) to ground.)
AdjustmentDescription

L310	High Band Adjustment
L319	Low Band Adjustment
	Connect Oscilloscope to Output Terminal for VCO. Adjust L310 for maximum at High Band. Adjust L319 for maximum at Low Band.