I need to re-wind a plate choke. I could use any tips for this procedure. Doug Canada; the ship of fools where corruption and politics are synonymous -- This email has been checked for viruses by Ava
Save yourself some headaches, and buy an Ameritron choke from MFJ. They work very well. They are about $30.00 or 35.00. Thanks 73 Jim W7RY Canada; the ship of fools where corruption and politics are
The Ameritron plate choke is too long; won't fit. My only choice is to rewind it. Doug "The difference between stupidity and genius is that genius has its limits." Albert Einstein Save yourself some
Except when they dont. Case in point, 3 tube Alpha 78, and probably 76 or similar rf decks, where you want real all band coverage. The Ameritron choke is naturally self resonant around 11 point somet
Tom W8JI gives a lot of information on winding and testing plate chokes. He designed the ones for some MFJ amps. https://www.w8ji.com/rf_plate_choke.htm GL, .... Bill K3HZP The Ameritron plate choke
Hi, I am looking for tips on how to set up and physically place the wire on the form. W8JI omits that information. I was hoping that some of the amp gurus here wound a plate choke and would share tha
The world doesnt revolve around the Ameritron choke which took 3 tries with hams as guinea pigs before JI got it right. See what the rest of the world is using and if you dont need 12M there are easi
W8ji has all the information. Wind the coil and measure it. Suppose someone gives you a choke and it is not tested. Then you have fireworks?K7fm colinSent from my Galaxy Tab A -- Original message
You can put a hole in the chassis and make the choke fit, too.Colin k7fmSent from my Galaxy Tab A -- Original message --From: Doug Renwick <ve5ra@sasktel.net> Date: 10/6/19 12:16 PM (GMT-08:00) To: h
Hi Doug, There are many ways to skin a cat, but this link shows how I made the 230uH plate choke for a dual band 80/160 M amplifier. I wound the wire on a mini- lathe at a very slow speed (about 1rpm
<Hi, <I am looking for tips on how to set up and physically place the wire on the <form. W8JI omits that information. <I was hoping that some of the amp gurus here wound a plate choke and would <shar
Oops, I meant 1rps, not 1rpm! Jim w8zr Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
Out of curiosity, is there a particular reason that HV chokes are typically mounted vertically and not horizontally? 73, Roger W7TZ CN83ia Grid Busters w7tz.webs.com _________________________________
mounting schemes work. Typ vert mounting is used. Either way B+ has to be fed to the base of the plate choke. Also, bypass caps have to be installed at base of plate choke. Also, you dont want to mo
Ive had no problems from squeezing the Ameritron choke into Alpha 76/78's etc which is about as tight as you can get. Carl mounting schemes work. Typ vert mounting is used. Either way B+ has to be fe
Carl, Did you notice any effect on 10MHz. When I put an Ameritron choke in my 78, which I agree fits just fine, it was okay but went bang on 10Mhz. Had I the time then I would have investigated movin
Also, you dont want to mount a plate choke parallel to a sidewall, nor the chassis. The stray C will screw up the choke, and shift its series resonances... down in freq.... which could easily cause c
Where and how a plate choke is mounted mostly has to do with making the best use of chassis real estate and heat dissipation. Someone mentioned that the famous Ameritron choke, popular because it can
We can't run more than 100 watts on 10 MHz in the USA. So no need to have it work there. Thanks 73 Jim W7RY Did you notice any effect on 10MHz. When I put an Ameritron choke in my 78, which I agree f
It is the same choke at RF parts RFC-3. Never had an issue on 160 on RTTY at 1500 watts output. Thanks 73 Jim W7RY On 10/10/2019 6:09 AM, Rob Atkinson wrote: Where and how a plate choke is mounted m