I have built 2 loop controllers. 1 for 1000watts and 1 for QRP. Both controllers behave the same when I go higher than 20 meters. The SWR tune starts tuning when I transmit and on the display the SWR

Hi all, since some of you have had problems with their LCD-display, something good to know. I have two new ones of LCD2004A. Both have integrated resistors for the backplane light. See the red circle

Hello all, my first loop is an 80 meter loop ,Vacuum Variable Cap using Lofture's MLC. The one i just built is a 40m ML with an standard air variable cap , not a butterfly shape. (continuous rotation

Hi The backlight in my display works when I connect either USB or 12V. The link on the Teensy will not be cut until I get the display working I have checked the circuit board for solder bridges. The T

So the board is built and I thought I'd hook it up and just see if I get anything on the display and I'm getting nothing. Input is 14v, I do see 5v on the side of the voltage regulator. Even though I

Hi The backlight in my display works when I connect either USB or 12V. The link on the Teensy will not be cut until I get the display working I have checked the circuit board for solder bridges. The T

The following link is to an online equipment auction that starts in 5 days: https://schulmanauction.hibid.com Lots 124 thru 130 are for Jennings vacuum variable capacitors. Just an FYI for you big loo

Here is my loop tuning up using SWR tune and my Kenwood TS-590SG. Very fast tuning. -- LennyG KD2NEN

Dear group, This is my plan for the power and swr meter with the 5" screen. Integrate the the loop controller readout and buttons in the new power and swr meter. So than we can eliminate the expensive

For this project I like to use a Pololu TIC T249 stepper motor controller, very good stepper controller and programmable. But I will inform you later how I did it. Best, Johan

You'll have to excuse my ignorance. I don't really do programming though I can fumble my way around a bit and in getting the Teensy programmed I'm fumbling a bit. In the attached image I'm getting a e

So I'm just starting to build the tuner. I have most the components on the main board. I realized I forgot to order the Teensy board so that is on order but I wanted to know if everything looks correc

-- I had to modify the end stop logic to accommodate the optical end stops. They work much better than the mechanical ones I had in the original build. Now to shrink this whole thing down for a second

I ordered a control head and it doesn't exactly match what I'm seeing in the pictures on the website so I thought I'd post the pictures here and make sure I got the right one or see if I need to order

I am getting set up to use Mfj Rigpi controller for remote operations. I know the loop controller can be used in passthrough mode to control transceiver OR to send commands to the controller itself. B

Use a motor called 24V cc (step) actuator, the program is not the rumor as it makes the deal and the more it turns off but I'm not aware of this loop DI Ciro Mazzone ?? just controller problems for th

-- I was looking at the code and was wondering if it supports using a 12c bus for the lcd. I have already built a great controller and antenna and I want to miniaturize the controller to fit in a Hamm

The stepper motor has 100:1 planetary gear reduction and is a NEMA 17 from stepperonline.com . The cap was purchased from electrodump.com and the value was 2 x 20pf to 350pf. The guy that sells them i

-- I finally got the base loop completed. Now I am shrinking the whole thing down for a second QRP loop. Here are some pictures of the finished product. LennyG KD2NEN

I have one of the controllers 98% done and will never get around to completing it. It is complete except for the 2 A4975 ICs and the Teensy 3.2 I removed for other projects. It appears to operate norm