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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

toddroberts2001@... writes: Think of the loop element and amplifier as a complete system. With the components as described, the amplifier ne

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

writes:

N apologize for the interleaving answers and further questions P

Dear Nigel Is it absolutely confirmed there were only 2 transistors in the autopsy? best wishes Paul >>> At first I had some doubts as the posted photos seem to show more than two transformers but

In a message dated 06/05/2007 04:41:30 GMT Daylight Time, crabtreejr@... writes: AFAIK no schematics for the Wellbrook have ever been published. However the harware content which was discussed

wrote: Hello Adam, What went wrong with your old cap? 73, Dave KA3JGG

Dear John ok you are referring to Power Gain = 10 logbase10 (P2/P1) which is defined via the antenna terminology so everything is in terms of power gain ok forgot some of my limited antenna theory LOL

Dear John trying to follow most of your excellent expose via backward analysis however the voltage gain is 20 logbase10 (V2/V1) so for 27 dB we have 10^(27/20)=22.4 actual voltage ratio emitter to

Originally posted on 2007/05/05 at 8:09:04 PM Central Daylight Time One correction made. Hello Nigel, Paul et al AFAIK no schematics for the Wellbrook have ever been published. However the harware

Hello Nigel, Paul et al AFAIK no schematics for the Wellbrook have ever been published. However the harware content which was discussed here, and other information, leads me to the conclusion that the

Dear Nigel forgot that getting old, I remember that now, I remember seeing the pictures but was fuzzy on whether for sure bipolars were used I believe it was not known from the autopsy whether it was

N there are some mosfet designs that have very low noise with moderate gain for instance my H-900 has low noise reasonable gain mosfet design in the end it is a choice of course but the jfets and

Dear Nigel highest gain and lowest noise more likely with jfets ie more likely in the design than bipolar although not necessarily true if one considers say the David Norton noiseless design with

and Well, it is my understanding (take it with a grain of salt, this is theory) that, all other things being equal, higher Q comes when the resistance is lower. To get that, you need bigger wire (more