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Yes. -- Craig Williams W6CAW

The dilema! Is an auto atu also matching on rx ?????

Hi, John Bat41 is existing in glass, painted blue .

Well i cooked my ferrite cores on a swr coupler,saw one had burned coils so rewound it but still the coupler had a high swr when inline,i thought cooking the torroids had killed them,at first i only

Is there a visual check to determine if I have the crap diodes? Have not even started assembling my Aliexpress kit yet. The diodes on my board are largish glass things. Thanks John, VK4TJ

t.ly/Pdun ( http://t.ly/Pdun ) Be curefull, some of them may have different pinout

hi folks, you only have to search on internet for print-relais "HRS1H-S-DC12V" and you will be satisfied. Perhaps take a nearer look to the various producers. Not all let them use at 250V AC/3A. good

I am looking for sources for new relays. Building a new one. 73

Doh, just dropped the board and smashed a relay case on an ATU-100, Where is the best place to obtain a replacement ?

Paul. Is this what you meant. Cheers Robert Sent: Saturday, 28 January 2023 5:29 AM To: [email protected] Subject: Re: [ATU100] torroids thats a realy handy site mike,ts a shame the whole page cant be

Paul. If you have a PC with Win10 or later you can go onto a web page and hit Ctrl-P and it will give you a printer selection. Select Microsoft Print to pdf.? Then select a location and name? for

HI RG58 works perfect too. Both coils must be turned in the same direction.

thats a realy handy site mike,ts a shame the whole page cant be downloaded as a pdf,i have book marked it.

just to clear things up,the torroids i am winding are for a directional coupler i am repairing,it wasnt atu-100 specific but a general question.73.

I don't think the Tandem winding matters as its a transformer rather than a coil. But I could well be wrong. However, I've built quite a few of the ATU-100 and I have never given it a thought and they

So for the tandem toroid, does it matter which way those are wound? Should they be mirror images of each other (clockwise on one, counterclockwise on the other)?

For the air cores, you are correct, either hand will suffice as the start and end are inline, were they to be staggered as with the Toroid cores on the atu then it would matter. Left handed cores have

For the air cores, I think it doesn’t matter. For the tandem core, I don’t know. For the big ones, I think they are all clockwise.

Look at the board and think about it a while...

Does not matter for a single winding, for multiple windings ON THE SAME CORE wind them all in the same direction.