¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Locked Re: Wellbrook ALA1530
Hi Fraser, it looks like my worries about any copyright issues are correct; I just got this email below (or should I say threat) from Andy Ikin himself.. =============================== Dear Mr.
By Patrick Reynaert <preynaert@...> · #3401 ·
Locked Re: Wellbrook ALA1530
By gandalfg8@... · #3404 ·
Locked Re: Wellbrook ALA1530
Hi Guys, I was on a trip thru the US (actually, I'm staying for a year in Berkeley and will go back to Belgium in June) Just read all these e-mails. As I pointed out in my first post (some time ago),
By Patrick Reynaert <preynaert@...> · #3400 ·
Locked Re: Wellbrook ALA1530
I have been following this message thread with great interest. Do we know why Patrick is keeping so quiet about the ALA1530 schematic or even the basic amplifier design (balanced common base bipolar)
By Fraser <fraser.castle@...> · #3399 ·
Locked Re: Wellbrook ALA1530 - corrected
Dear Aimo because this particular device is such a good performer some of us want to understand why clearly we all want to invent new things, for sure we want to do this but for many of us, we are
By Paul V Birke · #3398 ·
Locked Re: Wellbrook ALA1530 - corrected
PLEASE! What is this "Wellbrook ALA1530-corrected" continuance? You, I suppose almost all of you, have the experience and wisdom to produce a lot better Active Loop Antenna, but obviosly have not
By aimo ruoho <aimounto@...> · #3397 ·
Locked Re: Wellbrook ALA1530 - corrected
I f the potting is being used primarily for protection, please think again. There are other products that will offer possibly better protection, yet allow repairs or changes to be made. One product
By Keith Browning <kbrowning@...> · #3395 ·
Locked Re: Wellbrook ALA1530 - corrected
In a message dated 08/05/2007 22:41:16 GMT Daylight Time, kbrowning@... writes: I f the potting is being used primarily for protection, please think again. There are other products that will
By gandalfg8@... · #3396 ·
Locked Re: Wellbrook ALA1530 - corrected
In a message dated 08/05/2007 03:12:14 GMT Daylight Time, mcqueen_34@... writes: Don't want to get into a p...ing contest but thermally conductive potting compounds generally have Thermal
By gandalfg8@... · #3394 ·
Locked Re: Source for details on recent UK loop patent mentioned
In a message dated 08/05/2007 05:48:51 GMT Daylight Time, steveratz@... writes: I've really been enjoying the "basic loopantenna theory" post by John Crabtree, as well as the followups. The UK
By gandalfg8@... · #3393 ·
Locked Source for details on recent UK loop patent mentioned
I've really been enjoying the "basic loopantenna theory" post by John Crabtree, as well as the followups. The UK patent writeup mentioned there can be found at this URL, thanks to Alan Gale for
By Steve Ratzlaff <steveratz@...> · #3392 ·
Locked Re: Wellbrook ALA1530 - corrected
Don't want to get into a p...ing contest but thermally conductive potting compounds generally have Thermal Conductivity of 10 Btu-in/oF- ft. Normal potting materials are 2 Btu-in/oF- ft when filled
By Steve Baker <mcqueen_34@...> · #3391 ·
Locked Re: Wellbrook ALA1530 - corrected
"I too share your concerns about getting heat out of a transistor when it is in potting compound." Potting compound actually helps the heat issue by creating more mass that the transistor must heat
By Steve Baker <mcqueen_34@...> · #3389 ·
Locked Re: Wellbrook ALA1530 - corrected
In a message dated 08/05/2007 00:42:07 GMT Daylight Time, mcqueen_34@... writes: Potting compound actually helps the heat issue by creating more mass that the transistor must heat and providing
By gandalfg8@... · #3390 ·
Locked Re: Wellbrook ALA1530 - corrected
Whooops........ My previous posting of this looked ok when sent but a total mess when it arrived back from Yahoo. I'm not saying changing it will make my ramblings any more sensible..... but perhaps a
By gandalfg8@... · #3388 ·
Locked Re: Wellbrook ALA1530 - corrected
In a message dated 06/05/2007 23:31:54 GMT Daylight Time, crabtreejr@... writes: Re. implications of the very low radiation resisitance, even at say 1 MHz - that should be the subject of another
By gandalfg8@... · #3387 ·
Locked Re: Wellbrook ALA1530 - corrected
gains are always positive so -33 + (+7) = -26 db to be overcome therefore positive 26 dB gain is needed is the way I am looking at this Paul
By Paul V Birke · #3385 ·
Locked Re: Wellbrook ALA1530 - corrected
toddroberts2001@... writes: Think of the loop element and amplifier as a complete system. With the components as described, the amplifier ne
By crabtreejr · #3386 ·
Locked Re: Wellbrook ALA1530 - corrected
In a message dated 5/6/2007 6:32:18 PM Eastern Standard Time, crabtreejr@... writes: Re the amplifier gain. If the antenna factor were unity, ie the antenna output were 1 volt into 50 ohms for a
By roberts50000 · #3384 ·
Locked Re: Wellbrook ALA1530 - corrected
writes:
By crabtreejr · #3383 ·