Chipswitch Features

Chipswitch Features​

30 MEMORY CHANNELS WITH TEMPORARY CHANNEL LOCKOUT AND REPEATER OFFSETS

The original HR2510 / HR2600 / HR2830 / LINCOLN has basically one memory available to it in the sense that it remembers the frequency you were last on during a power interruption.

The CHIPSWITCH supplies you with three groups of MEMORY BANDS.

There are now ten (10) user programmable frequency channels available for each MEMORY BAND. You can elect to have repeater offsets to any of the stored memory channels. You are also provided with the ability to lockout any memory channel(s) temporarily during SCAN/SEEK functions.

EXTENDED FREQUENCY COVERAGE
Adding the CHIPSWITCH IC will allow the radio to operate contiguously from 11 through 10 meters without any further modifications.

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 at a few sites. – Also See Broad banding for 24Mhz thread for a simplified modification.

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. – This feature is no longer accessible. The unlock password can no longer be generated.

PROGRAMMABLE SCAN/SEEK FUNCTION
The original HR2510/HR2600/LINCOLN allows you to scan on an arbitrary 'band basis." This new feature allows you to select a range of frequencies for SCAN and SEEK while in band 0, or SCAN/SEEK by memory channels in band 1, 2 and 3. The SCAN feature allows you to set the 'hold-time' (the amount of time the radio waits to resume its scan function after that particular frequency quiets down). The SEEK feature is identical to the SCAN except for when the radio is scanning and detects activity on a frequency, the radio will receive on that particular frequency for a user-programmed length of time before it continues the scan. SCAN and SEEK are completely user programmable for 5 or 10 kHz steps in band 0.

PROGRAMMABLE CHANNEL UP/DN BUTTONS
This provides you with the ability to program the radio's channel up and channel down buttons to change channels/frequencies in any of five (5) different ways. (5 kHz, 10 kHz, Underlined digit, etc.

PROGRAMMABLE MICROPHONE CHANNEL UP/DN BUTTONS
This provides you with the ability to program the microphone channel up and down buttons to change channels/frequencies in any on of eight (8) different ways.

SPLIT FREQUENCY OPERATION
When enabled, this allows you to transmit on one frequency, and receive on another.

PROGRAMMABLE TRANSMITTER TIMEOUT
This feature provides the radio with a built-in QSO timer. When enabled, it triggers a programmable timer the moment the radio starts transmitting. When the user-programmed length has been achieved, the radio will stop transmitting. To continue transmitting, just release and press the microphone PTT (Push To Talk) Button.

PROGRAMMABLE TRANSMIT FREQUENCY RANGE
This provides you with the ability to program a range of frequencies to operationally transmit on. In this mode of operation, you still have the ability to receive frequencies out of the user-programmed range, but can not transmit on them.

PRIORITY CHANNEL (Requires optional hardware)
This Feature is no longer accessible – The Priority board needed is no longer manufactured.

Priority channel operations allow you to program any frequency (i.e. home frequency, etc.) and have the HR2510/HR2600/LINCOLN check this frequency while you are on another, at a user-programmed rate. This feature will not function properly without the optional PRIORITY CHANNEL BOARD.

MISCELLANEOUS
The 'SPAN UNDERLINE CURSOR' now has a 'phantom' 4th position (all 3 underline bars) cursor. This enables you to go through the band in 100 kHz increments. This 'phantom' 4th position is indicated by 3 cursors.

The 'SPAN UNDERLINE CURSOR' position and the underlined digit can be moved by pressing both microphone buttons at the same time. (Great for mobile operation)

The button repeat rate is now programmable.

The internal 'button beep' duration is now programmable from 0 to 0.5 seconds.

The 'RPTR' button on the HR2600, when depressed, will transmit the CTCSS tone to open up a repeater station. Repeater offset selection is required when programming memory frequencies.

The HR2510/HR2600/LINCOLN now has two function modes:

OPERATE MODE
This mode is the radio's normal operation mode.

PROGRAM MODE
The front panel controls are used to program information the radio will use during OPERATE MODE (i.e. memory channel frequencies, split channel, scan functions, etc.)

INSTALLATION
As the name CHIPSWITCH implies, the basic modification of the radio is the replacement of the existing UNIDEN microcomputer chip. A person proficient in soldering/desoldering techniques on P.C. boards is qualified. A comprehensive installation manual is provided.
No modification to the front panel is required as all the new features are controlled by the existing knob and buttons on the front panel.

The optional PRIORITY CHANNEL BOARD and 12 METER MODIFICATION KITS do require modifications to the circuit boards.

 

[Rogerbird1]

24 MHZ Broadband instructions for your Chipswitched HR2510 and Lincoln

These instructions are to broadband your radio if you have the 24.000Mhz mod or the Chipswitch installed.

MOD #1

#1. Take the four screws out of the speaker cover on the radio.

#2. With the radio upside down and the PLL board facing you, Remove the four screws in each corner of the pll board.

#3. Loosen the four screws on the sides of the radio that hold the PLL tray in the radio. Loosen them all the way before they come completely out.

#4. Pull the PLL board out towards you so the bottom of the PLL board is upside down.

#5. Look at the diagram below and locate C304, C326, & C327. At the point where they connect together, you will place 1 leg of a 50V 220pf capacitor and the other leg to ground of the board.

#6. Check your work and make sure you did not short anything out and that you placed the capacitor in the right place.

#7. Reassemble the PLL board and connect power to the radio.

#8. Connect a watt meter and a dummy load to the antenna jack.

#9. Put the radio on 29.500.Mhz and peak L310 for maximum output power.

#10. Now put the radio on 25.500Mhz and peak L319 for maximum output power.

#11. Reassemble your radio and you are ready to go.



MOD #2 A simpler method...

Here is a simpler method of increasing the VCO coverage on the HR2510. If your HR2510 is Chipswitched, but doesn't lock on 12 Meters, this mod will take care of the problem without having to access the underside of the synth PCB.

Remove the four screws from the bottom cover and remove the cover.

On the PLL board locate L307 (TP306).

Install a small ceramic capacitor between the long lead of L307 and ground. Any value between 180 and 220 picofarad (pf) will do. There is a convenient ground located just behind L307, this location is a plate-through hole (it looks like a shiny solder dot showing through the silk screening.)

The set should now lock from 24.800 to 29.900Mhz without further adjustment.

If you have access to a scope, the radio can easily be broadbanded for better performance in this new frequency range. To broadband, monitor the output at J311 and adjust L310 and L319 for equal output at the upper and lower limit of your operating range.