I've build a controller for a loop covering 40-17m and a small air-spaced capacitor. A 36:1 gearbox with spring loaded gears provides a nearly backlash free coupling to the 200 steps/rev stepper. The

Hi, Simple question about firmware / hardware compatibility. I am resurrecting an older Loftur controller with the 4975 chips to operate an MFJ loop converted to a stepper. The firmware is version 4.0

I had originally proposed this idea in another useless thread so decided to start this thread to gauge interest. As currently coded, the magloop controller doesn't play well with some of my rigs which

Hello All. I built the controller PCB, probably about 2016, it’s marked r2, 2015-01. I completed it and checked the basic functions but never actually connected it to a loop. For one reason or another

Hello, I have building the MLA controller and I hurting against an issue> I am using firmware 4.10. Normally ( I think so) when going in Auto Tune a command has to be given to the FT817 via the serial

If anybody is interested in using Loftur's excellent loop tuner to automatically control the varactor tuning voltage on Rick Karlquist's (N6RK) also excellent tunable shielded loop antenna, it is easy

Hi, I am trying to compile the ML_v410 code but getting an error message, can anyone help please: Arduino: 1.8.13 (Windows Store 1.8.42.0) (Windows 10), Board: "Arduino Uno" ML_v410:61:10: fatal error

quite obvious that teensy 3.2 is a major issue! for what I can ready here! I saw Teensy LC and Teensy 4.0, LC looks like totally different hardware format, what about 4.0 can it be used to replace dir

Hello All, I have a Yaesu FT-891 and wanted to get it working with Loftur's Magnetic Loop Controller, and I need to thank Jonasson Loftur VE2AO, and Joe Street VE3VXO for all your help. Joe recommende

Just wondering if it is absolutely necessary to insulate the VVC shaft from the stepper motor shaft?

I built the controller without the optional SWR metering. I'm wondering if it wouldn't be possible to modify the code to display the SWR and power output from CAT on the radios that support it. Has an

Has anyone tried swapping out the dc motor for a stepper and running this with the tuner? There are already limit switches on the chassis so assuming the thing is geared down sufficiently I think this

Does anyone know if boards are still available? I've emailed lofturj@... twice but have not gotten a response. I did get one in September of 2021, but am looking for a second board. Perhaps he has mov

Hi All, Running loop controler with Icom IC 705. Has someone experienced this problem ? no data transfer from serial port to radio when pressing the tune button (SW 5). Been looking for a solution wit

In case anyone is having trouble with the connection between the 7300 and the loop controller (1) Loftur's cable diagram is correct - the jack socket on the 7300 has no connections internally for the

I remember in the days of the google group someone explained how to use a rotary encoder as the limit switch for a VVC.. My setup will be using a 11.5 VVC that goes from 54 pf to 1015 pf it is driven

Any suggestions -- 73 Richard VE2DX WWW.VE2DX.COM

Hello Gang, I am trying to help a couple of hams using the VE2LJX/TF3LJ firmware and having a bug when using ICOM 705. You don't need a 705, just ANY ICOM radios will do fine. would like to do a TeamV

I'd like to have the antenna tuner monitor the frequency of the radio while at the same time have my computer monitor and control the radio. My question is can I tap the TX RX lines of the serial conn

How did you guys manage the stepper driver controller temp? I've noticed mine gets VERY hot when it's been turning for a while and while it may not turn the capacitor all the way very often I did just