Section 2
INSTALLATION #15
For radios of other manufacturers. The DS-400 can be installed to almost any PLL synthesizer provided the following conditions exist:
1. If a 10-meter conversion is intended, the VCO must not shift between transmit and receive.
2. As the VCO control voltage is increased, the radio operating frequency must also increase.
3. The VCO should have at least a 1.5 MHz range. (0-5V change on control voltage input to VCO).
4. The down mixer frequency output must not exceed 4 MHz.
5. The down mixer signal must have enough output signal to drive the 400.
6. The VCO output must not be doubled or tripled as this will cause 10 or 15 KHz steps.

If these conditions above are met, the DS-400 system should work on the receiver. The frequency range will be determined by the various circuits; i.e. bandwidth, sensitivity, etc. If the installer has any questions regarding the installation, please contact the factory.