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AVR ATMega8 board for PLL MC145170
This board allow to manage a FM transmitter including a Phase Locked Loop (PLL)on a serial bus (SPI) like a MC145170.
A current frequency is memorized in EEPROM to configure PLL at power up.
Three auxiliairy frequencies are available for maintenance function and/or HF adjust.
A local interface include 4 keys and a LCD display enable to modify transmitter parameters.
This board can be completely drived from a serial link RS232 (19200 Bds,8b data,2b stop, no parity).
A temperature sensor enable to control working temperature and 2 analog input are used for HF power measure (Forward and Reflected).
Information about TOS protection activation is processed by this board to inform user (local and remote) on a TOS Alarm.
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Build your own LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and "Zero Out" function to make sure the readings are as accurate as possible ... [more] |
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