On Tue, Jan 10, 2023 at 9:33 PM paul larner <quadzillatech@...> wrote:
its the box on my 320.see pic.
On Tue, Jan 10, 2023 at 10:31 AM paul .a larner <quadzillatech@...> wrote:
hi tony,can i put the decoupling caps at the switch end of the wires do you think?to fit them at the board end entails a total strip due to the way it fits the case.73 m3vuv.
On Tue, Jan 10, 2023 at 10:16 AM Tony Magon <temagon@...> wrote:
Hi Paul
B1 switch is a spring loaded press button which puts the atu into automatic operation - it just needs one press which which will put the atu into automatic operation which will indicate by a dot at the end of the first line on the screen - if you press the button again it will go out of auto operation - all it is doing is quickly earthing the pin to ground - when in automatic mode you can then put the transmitter into tune mode with a max of 10 watts - the atu should then go thru its sequence to get the best swr. then turn the tune mode on? the tx off
B2 bypasses the atu - same type of button switch as B1
?the way you have the the b1 and b2 wires just dangling would indicate that you are getting rf into the PIC - You need to put a 100n capacitor to ground as per the diagram
I have two of these atus ready built - one of them did not have auto or bypass buttons - to set B1 into auto mode I had to touch the? PIC pin to ground to put it into auto
If you have any further questions - let me know your phone number and I can ring you - my mobile phone plan has free call to uk
73
Tony VK2IC
If you
On Tue, Jan 10, 2023 at 8:57 PM paul larner <quadzillatech@...> wrote:
i already have that but it doesent mention if the pins sink or source current and how many ma's etc,ie does a fet interface or bjt be needed for these to key a radio for example? ,i hope you understand where i am coming from? 73 m3vuv.
On Tue, Jan 10, 2023 at 9:52 AM Tony Magon <temagon@...> wrote:
Pin Values
Hi Paul
Please find attached a pdf in regard to the operation of the two points B1 and B2 - Please read in regard to this from Page 6
Regards
Tony VK2IC ex ZL4DE
On Tue, Jan 10, 2023 at 8:23 PM paul larner <quadzillatech@...> wrote:
do the RA6 and 7 pins go high or low when a tuning cycle comences,can the function of these be better explained and how to use and interface to a radio,ie to drive a fet to key the radio etc!,the manual doesent go into enough detail what these can do. 73 m3vuv
