2.3GHz 13cms Source and Analyser
Four menus are provided in software for storing user settings, regularly used functions, and the software version. The integral boot-loader allows for software updates to be downloaded, and programmed with a standard USB to TTL lead, removing the need for any PIC programming hardware.
A stable CW source is provided, tuneable from 2200 to 2755Mhz in 1Mhz steps with adjustable output level from ~+4dbm to -28dbm .
Note that outside of the BT band (2402 – 2480MHz) there is some deterioration of the flatness of the amplitude response -10dbm at the high end, and -22dbm at the low end.
A sweep function is provided with adjustable Start & Stop frequencies covering the range from 2200 to 2750 MHz. Dwell time is adjustable from 150ms – 5000ms. The sweep is performed in 1 MHz steps.
The output level is adjustable from +4dbm to -28dbm, and can also be adjusted in real time “on the fly”.
A modulation and CW keyer mode is available. Text up to 32 characters can be input via the rotary encoder, and stored in the Flash in the microprocessor. The text can then be keyed onto the chosen frequency.
The CW keyer is precisely timed with real-time adjustable WPM. An output pin is provided for an LED or sounder, and a configurable EXT pin option allows a Morse key to be used in place of the internal software routine.
PIN marked C18 on KP1 is the EXT key input pull low to TX
PIN marked C19 on KP1 is the TX Modulate output +3.3V high level current limit at 10mA with an external resistor for driving an LED VCXO etc.
This is a receive function displaying an input power level. Measurement extends from the BT LNA noise floor at -96dbm to ~-50dbm 40db of dynamic range may be useful as an off air selective power meter. Measurement can be selected by the frequency control from 2200 to 2750 MHz in 1 MHz steps.