You can control it in software, much simpler! The main reason for not putting in an RF sensor is that raspberry pi doesnt have an ADC
I'm wondering if we could add an SWR bridge and use the reverse sense voltage to automatically fold back the RF power?? Perhaps control the gain of Q11 to accomplish this?
(I have an sBitx on order...)
73
Gody
K3NG
On Wed, Aug 3, 2022 at 6:15 AM Ashhar Farhan <
farhanbox@...> wrote:
Scot,
You have to build a resistive bridge like this :
Here, each of the 50 ohm resistors should be able to dissipate 10 watts. So, you make a 10 watt resistor by paralleling 10 resistors of 470 ohms each.?
- f
Hi Ashhar,
I¡¯m a bit confused.? I get paralleling ten 470 ohm resistors but I¡¯m am uncertain how to use it.? How do you connect this arrangement (three legs) to protect the finals?? Is it in series with the antenna?? Can you sketch to wiring?
Thanks in advance, Scott
