Hi,
I am going to build some 145Mhz RF beacon (HAM Band), with 1 Watt RF Output, to be use for ARDF Sport, Fox hunt.
I have search the circuit, but I have problem at the RF power output stage, and the PLL.
Reason, the design is using old and obsolete ICS525 PLL chip and 2N4427 RF Transistor .
This 2 IC is hard to get , for the PLL chip, I may can get a SPI control PLL chip, but for transistor, I look for equivalent 2N3386, also is hard to get.
Question:
1. Can I parallel a few small RF Transistor (), to obtain a 1 Watt output?
if yes, how to do it? just simply parallel?
2. Or any RF Power Transistor (1~2W) that you can recommend?
3. I need a freq between 144~145Mhz, any PLL chip that you can suggest?
Thank you,
Victor
I am going to build some 145Mhz RF beacon (HAM Band), with 1 Watt RF Output, to be use for ARDF Sport, Fox hunt.
I have search the circuit, but I have problem at the RF power output stage, and the PLL.
Reason, the design is using old and obsolete ICS525 PLL chip and 2N4427 RF Transistor .
This 2 IC is hard to get , for the PLL chip, I may can get a SPI control PLL chip, but for transistor, I look for equivalent 2N3386, also is hard to get.
Question:
1. Can I parallel a few small RF Transistor (), to obtain a 1 Watt output?
if yes, how to do it? just simply parallel?
2. Or any RF Power Transistor (1~2W) that you can recommend?
3. I need a freq between 144~145Mhz, any PLL chip that you can suggest?
Thank you,
Victor