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Al, Interesting. I have one of the ATU-10s that will sometimes find a tune and sometimes will not. I assumed it was a problem with the hardware and when I opened it noticed the use of glue around the

These units from?newdiytech.com look exactly identical to the one I bought from AliExpress. it was DOA. Contacted the seller and after much wrangling he sent me another one. The second one will tune

This was addressed recently.? Check /g/ATU100/message/1485 Al, K2ZN

Have seen lots of ?online reviews, but, have not discovered ?the range of ?antenna impedance, it can ?match

I just came across this thread. I have the same question but maybe I am a bit late. I purchased from newdiytech.com back on June 26th. Based on tracking I hope to have it in a few days. Price was

Hello First off, let me state that I'm an analog/RF guy with essentially zero SW experience - enough to pass the exams decades ago, then promptly forgotten. That said, I'm not afraid to tinker with

Hello! As I hope to get the HV capacitors soon - I've tidied the project's page at GitHub ( https://github.com/Paguo-76M2/N7DDC_ATU-10-w-AD8361/tree/main/PCB ). After several runs of the analyser

Thanks to all who replied to my query. All clear now. Cheers. Nick. VK4YT.

Hi, I am new to the group. I have just received the kit. Any suggestions before starting assemblying ? Just for the assemby, I have heard of working issues.

Thanks to all who replied to my query. All understood. Nick. VK4YT. Sent: Tuesday, 5 July 2022 3:29 PM To: [email protected] Subject: Re: [ATU100] ATU-100 power requirements. Nick, I have

3.7 volts will keep the microprocessor alive, but recommend 6 volts or more to operate the relays. If you plan to use battery backup along with external 12-15 Volt external power, include a blocking

3.7 Volts will keep the microprocessor alive, but may not be enough to run the relays. The ATU-100 specifications say the maximum current draw (while switching relays) is 400 mA. Current draw running

Hi, there is a DC to DC converter.... Sometimes this DC converter is source of QRM. .... 73. [email protected]> a écrit :

I think you may have the atu-10 (battery) and the atu-100 12v confused. 73 Dr Ellis G7SAI

Nick, I have not checked the circuit but I imagine the atu circuit works at the voltage level of the battery and not the supply. The external power is used to charge the internal battery, so it

Hi all. Just joined group today. I have an ATU-100 and am confused re the power requirement. The info says 10-15 volts dc range but the internal battery is a lithium 3.7 volt. The input on the

Hi all. Just joined group today. I have an ATU-100 and am confused re the power requirement. The info says 10-15 volts dc range but the internal battery is a lithium 3.7 volt. The input on the

How about sharing your doubts? It's not that complicated The inductors are well documented, just follow the pictures and turn instructions. The SWR transformer is also easy, 20 turns of the thin

I too am looking for build instructions. The box came with one page showing the coils and relays and *nothing else!!!* Sadly, I am not really a radio engineer, but a Biologist by trade, and though I

Hello! I'm yet to populate all the HV capacitors, but today I had a chance to power up the AD8361 detectors. Those were bought at aliexpress so I was not sure if they are genuine|operational. Luckily