ORIGINAL MESSAGE: REPLY: The Palomar data sheet says #6 is good for 2-30 MHz. http://www.palomar-engineers.com/Iron_Powder/iron_powder.html Where did your informaton come from? Perhaps different manu
Straight from the Micrometals spec sheets and then some testing. There is a huge difference between using it in a SS HF VFO and with actual power with much larger wire which limits the low frequency.
Mixes (and the numbers that describe them) are generally proprietary to their manufacturer. Mixes #31, #43, #44, #61, #67, #73, #75, #77, and upstate NY. It was originally a family owned company -- h
Colin, Yes, you're right. I meant to say that would NOT trust a reseller to have a clue about the use of their products.. Thanks! 73, Jim K9YC _______________________________________________ Amps mai
A 6 mix iron powder is good for 6-10M, I use it as the L in the input pi Straight from the Micrometals spec sheets and then some testing. There is a huge difference between using it in a SS HF VFO an
Nope. Most consumer and semi-pro audio and video products, and virtually ALL ham and computer products have pin 1 problems at every audio input and output. The good news is that most PRO audio mfrs h
PLEASE can we give this problem a new name! 'Pin 1' may mean something to pro audio people, but in amateur radio it's a bad name - meaningless, misleading and a barrier to communication. -- 73 from
One of the traditions in this world is that when you discover or invent something something you get to name it. Neil Muncy discovered the Pin 1 Problem and published it, and that's what he chose to c
ORIGINAL MESSAGE: REPLY: Carl: In your original post you said "A 6 mix iron powder is good for 6-10M" and you quote Micrometals data sheet. But according to the Micrometals data sheet at http://www.m
There is nothing magic about rack mounted gear that makes it more professional, nor makes if free of pin 1 problems. When Neil Muncy published his landmark paper exposing the Pin 1 Problem in 1994, v
Jim, what method do you employ to find the Pin 1 problem on a piece of equipment out on a trade show floor? I assume it must be a fairly simple check I can employ in my ham shack. tnx 73 Rob K5UJ __
Your missing the point as usual Bill in your ongoing attempts to provoke arguments. First there is no such thing as a Palomar toroid and they cant even copy the data properly, maybe you should write
Part of the problem is that what is "good" for use in an energy storage or transfer device (an inductor or transformer) is not the same as "good" for use in an RF suppression device. If you are buil
ORIGINAL MESSAGE: REPLY: Once again, Carl makes a personal attack instead of defending or explaining his statements. It's an old story but I'm not going to let him get away with it this time. My only
ORIGINAL MESSAGE: REPLY: That is quite true and worth knowing, but so far this thread has been only about RFI suppression, not resonant circuits. 73, Bill W6WRT ______________________________________
I could not agree more with Ian, GM3SEK. Neil Muncy may well have 'discovered' the 'Pin 1 Problem' as related to pro audio equipment in 1995. He did not discover the need for proper (single point) gr
Especially in the early days when studios were at or near the transmission sites, I suspect the audio guys had to learn a lot of tricks. Can you imagine when WLW was running over (on 700kHz) 500kw ca
If anyone has a problem with my replies or accuracy Id like to hear it either here or in private. As far as the rest of Bills diatribe its not worth answering. Carl KM1H _____________________________
Only comets and children :-) In that wider world, "Pin 1 problem" just doesn't work as a descriptive term. Nobody can begin to guess what it means, unless they already *know* the answer. It is no dis