Hello Manfred, Hi Manfred, I cannot tell you how pleased I am that you have responded. I have taken the liberty to bring the reply to direct e-mail, I hope you don't mind? I have kept nearly all your
Hello Ron, This amp is on 136kHz (not running 136kW, that was, (I hope obviously....), a typo! 1kW is par for the course given antenna inefficiency down there This amp is on 136kHz (not 136kW, that w
Hello Emile, If you get no response on the Amps forum someone on this forum is sure to know: https://groups.yahoo.com/neo/groups/collins_radios/info If you still can't find the info I can look inside
Hello John, http://www.pe1rki.com/watercooling.html has some nice water cooled heat sinks, and machines nice copper spreader plates if you don't have access to a milling machine -- Best regards, Chri
02/05/2017 16:43 One slight issue is I am in the UK, so it would need well packing if abroad. Can arrange UK collection. Thanks. -- Best Regards, Chris Wilson. mailto: chris@chriswilson.tv __________
13/05/2017 19:04 Hi. Two off 1kW quasi Class D push pull FET amps on 136khz feeding a Wilkinson combiner via the amps own output transformers designed for a 50 ohm load. Combiner built from plans for
Hello Alan, Hi Alan, I cannot thank you enough for the reply on the "AMPS" forum to my questions. I did use 78 material for the output transformers of the two amps I built to W1VD's specs, and guesse
Hello Manfred, Thanks for your usual very comprehensive and clear reply, this is superb info and should help me a lot on a practical and theoretical level, although I sometimes think theology has mor
Hello Alan / Manfred, Do you thinking this size core is over the top in the combiner, I don't mind the cost if it has good overhead, but maybe using more wire length on a (much) bigger core has negat
Hello Manfred and Alan, I stacked 3 off 78 material cores in the same size as the 77 material toroids and wound them with 180 strand speaker wire with a conductor diameter of about 2mm. I used 15T pr
Hello Manfred, Tuesday, May 16, 2017 What a totally awesome reply Manfred. I have read it several times and believe I fully understand the how and why of it all, so that equals a great explanation! I
Hello Roger, I have some fairly heavy fabric covered Litz wire, but stripping the enamel is proving a nightmare. It's old, pre 1960's i think, and a solder pot doesn't do the trick. Nitromors paint s
Hello Manfred, Yes, I understand the importance of each conductor being insulated and woven to bring stands in and out of the bundle, that's what I have that's so hard to strip the enamel off. I only
Hello KA9EGW, I'll have to Google that, can I smoke or inject it if it doesn't work as a Litz stripper? Sounds dodgy :) Thanks! -- Best regards, Chris mailto:chris@chriswilson.tv ____________________
Hello Manfred, Thanks for the info on tinning Litz, and thanks to all who also contributed. Even using the hot air tip on a butane soldering iron for a minute fails to do more than darken the insulat
Hello Manfred, Yes, you have it there Manfred, it's obviously designed (or perhaps aged) to be in need of an aggressive or unusual none Green chemicals for stripping the enamel. A shame as my acquain
22nd May 2017 Hello Manfred, I await the cores and wire patiently, in the meantime i am wondering if this transformer could be wound to negate the need for my separate impedance matching transformer
Hello Jim, A modern Henry, looks very nice, shakes piggy bank, shakes head. -- Best regards, Chris mailto:chris@chriswilson.tv _______________________________________________ Amps mailing list Amps@c
Hello Manfred, Well, I have finally got around to finishing the transformer you suggested and all I can say is WOW!!I have to admit that looking at the difference in physical size of the auto transfo
Hello Duane, I'll copy / paste Manfred's post to the forum to you by direct e-mail in a minute Duane. -- Best regards, Chris mailto:chris@chriswilson.tv ______________________________________________