Re: Complete Circuit Diagram U3S

开云体育

Hi,

It would still be nice to see Pin 13 go to the relay and the contacts that it energises, and the D1 and the links.

73 Andrew

From: [email protected] [mailto:[email protected]] On Behalf Of Michael Lloyd
Sent: 18 October 2017 20:12
To: [email protected]
Subject: Re: [QRPLabs] Complete Circuit Diagram U3S

There's an arrow with the band numbers on it for each band. Band 0, a noted on the last email, is on PIN 13 of the U3 and it is just to the left of PIN 10 on the LCD. It's pretty common to to denote connections like that on a schematic.

(James email arrived as I was typing this)

73
NE5U

Mike

James Anderson

October 18, 2017 at 2:06 PM

Hello Andrew.

Have you taken a look at the LPF relay board diagram for help.

links here?

It doesn't show relay zero but the principle is the same for relay zero which is the on board relay of the U3S.

Each relay is switched through the pins of the 328 pin 13 relay zero pin 23 relay 1 and so forth.

Hope this helps. James

1 Ultimate LPF kit: Relay-switched LPF kit PCB Revision 5 1. Introduction Thank you for purchasing the QRP Labs relay-switched low-pass filter (LPF) kit.

From: [email protected] <[email protected]> on behalf of Andrew Lenton <a@...>
Sent: 18 October 2017 19:07
To: [email protected]
Subject: Re: [QRPLabs] Complete Circuit Diagram U3S

On Wed, Oct 18, 2017 at 10:23 am, Mikael Dagman wrote:
The supplied diagram is not complete the, there is no relay 0 or D1 and what it connects to

BR

Andrew