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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

I had a daydream about this idea coming to me, but since it might be possible cause everyone is smart here, I just wanted to share it. What if its possible that we can connect some sort of frequency

Jim, which is this 1530, the HF-centered one or the one with more MW coverage also? Are you happy with its performance on HF? -Hue Miller

Also, tubesandmore.com and radiodaze.com. But possibly the best source is eBay. Dave wrote:

My 1530 is in regular use from 150 Khz. to Hi band at 155 Mhz. Listen to FM music broadcasting 88-107 and 2 meter repeaters, too, at 145 Mhz. I believe Andy, the manufacturer, has said that up to 100

How do I higher the Q? Adam E. inductance, will be larger the more. It handful

Yes, that's the idea. Without using any actual component values ... the loop has some inductance, and some inherent capacitance. The L and C by themselves (no added cap) resonate at some frequency,

Hi Adam, In the USA, this place carries parts for crystal radios, and has both single and dual section 365 pF variable caps. Click on Radio Parts to see the caps for sale.

Thanks for the helpful links, but is there anymore information why you suggest these links? Also would smaller wire do better and is there other things that I need to know about loops for longwave?

Looks like good stuff. But, wow, the prices.

http://www.danssmallpartsandkits.net/

http://www.oselectronics.com/ose_p96.htm

or a pair of good rf transistors in a push-pull grounded base circuit. 73 John KC0G nonlinear@... writes:

Hello, I am planning on making a longwave loop antenna that uses 24 gauge wire on the same frame. When I ran out of space on the sides I had to rewind the wires backwards to get more on the loop. Also

or mosfets Paul