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HR 2510

Roger Valentine has been working on these radios forever.
He helped me out years ago on a 2510 I installed a chip switch in.
Had the password to allow 12 meters but it would not transmit down there.
73
Jeff
Password? Thaaaats not how a chipswitch works.
It's an EASY mod the expand the radio. Add a disc cap to the processor board and retune two cans on specific frequencies and you're done.
 
This was many years ago and yes there was a password needed to un block 12 meters.
We were working on a spur problem that the radio had when transmitting on 12.

73
Jeff

Well there wasn't on the ones that I've installed. I've done two chipswitches, one in a 2510 and one in a 2600. No password required.
I also have full spectrum transmit and receive 24.800 - 29.999.
 
I just found something that makes what your saying make a little bit of sense. It was below 12 meters heading down towards the 15 meter band where the issue is and there is a password that is blocking operation down there.

With additional modifications to the PLL PCB, the CHIPSWITCH allows full contiguous coverage from 24.800 to 29.999 MHz. (12 through 10 Meters). Modifying these radios for use in the 12 Meter range can be done. Although with the Chipswitch, these radios could be operable to 15 Meters, some spurs near 15 Meters cannot be adjusted out, therefore a password has been added to the Chipswitch program to disallow access beyond 12 Meters at this time.
 
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Password? Thaaaats not how a chipswitch works.
It's an EASY mod the expand the radio. Add a disc cap to the processor board and retune two cans on specific frequencies and you're done.

not quite...

On the back of the processor board pins 34 & 35 needed to be isolated from a trace & pulled to ground by a resistor. I don't recall any needing "re-tune". These things were barn door wide in the synthesizer & the TX / RX mixers. Their 26.000 to 29.999 coverage was actually one of their faults.

See Jim Shorney's info at http://ps-2.kev009.com/jshorney/2510.htm to see the graphical difference between the 5KHz and 3KHz filters as well as some useful narrative.

I'll freely admit that my knowledge of the HR2510 and it's cousins was born out of ignorance. If not for Roger, Tom (SK) Jim and Chris I'd still be clueless. Now after seeing near 100 of these radios and 20 recently I have a clue, kinda :confused:
 
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not quite...

On the back of the processor board pins 34 & 35 needed to be isolated from a trace & pulled to ground by a resistor. I don't recall any needing "re-tune". These things were barn door wide in the synthesizer & the TX / RX mixers. Their 26.000 to 29.999 coverage was actually one of their faults.

See Jim Shorney's info at http://ps-2.kev009.com/jshorney/2510.htm to see the graphical difference between the 5KHz and 3KHz filters as well as some useful narrative.

I'll freely admit that my knowledge of the HR2510 and it's cousins was born out of ignorance. If not for Roger, Tom (SK) Jim and Chris I'd still be clueless. Now after seeing near 100 of these radios and 20 recently I have a clue, kinda :confused:

I was specifically talking about the 12 meter mod, not the initial installation of the chip. Check steps 9 and 10 for the adjustments required..
http://www.cbtricks.com/rogerbird/2510/24mhz.html
 
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Just sent my Chipswitched Lincoln to Roger. He had a few in front of mine
 

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