- Ability to lock at least the RF board to a 10MHz external reference (that may be the "synthesizer lock input" mentioned below).
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On 12/3/2013 8:05 AM, Bryan Hoyer wrote:
Transmit testing is well underway and I have begun the board spin to prototype II, in parallel with receiver characterization.
In the process I have added a small housekeeping processor to the radio card, because a PIC with A/D and PWM was cheaper than using discrete ICs.
We have planned the following capabilities but I'm open to other functions provided they meet cost goals.
Please be specific as to what function you would like to see rather than just asking for a bunch of inputs/outputs.
Telemetry applications can be met with USB I/O so let's focus on core radio functionality.
You have Santa's ear,
Forward RF PWR
Reflected RF PWR
PA Gate Voltage
12V Fan Output
TX inhibit Input Open Collector
Synthesizer Lock Input
Red/Green TX/RX LED
Serial Interface to Main CPU Set Monitor All Values
EEPROM for Calibration Values
SW Control Functions:
* Fan on at PA>60C
* PA rollback at PA>80C
* This will allow colocation of the UDR at a site with a 440 Voice Repeater
TX Faults RED Blinking LED
* Hi Reflected Power
* Loss of Lock
PS Low Voltage