Akula0083 30 Watt Self Running Generator.

[Farmhand]

@ all,

I have a very basic question here. Suppose I have a 0.5 watt radio transmitter sitting on my bench. Also suppose I have access to unlimited crystal radio sets tuned exactly to the frequency of the 0.5 watt transmitter.

Question 1: How many maximum crystal radio sets can be fed with the 0.5 watt transmitter ?

Question 2: Is it possible that after adding Nth crystal set, the (N+1)th crystal set will recieve nothing ? (If N is the answer of question 1 above).

Question 3: By increasing the number of crystal sets to almost infinite. Will the quality of reception go down inversely proportional to the number of receiver sets.
Best,

What is the range and type of the 0.5 Watt transmitter, (grounded conventional antenna, not grounded conventional antenna, Tesla style capacitive elevated terminal ? And what type of crystal radio receivers do you refer to, regular elevated wire antenna with ground or Tesla style grounded ?

Something like this maybe. http://www.ebay.com.au/itm/CZH-05B-0-5W-FM-transmitter-radio-broadcast-PLL-LCD-stereo-87-108mhz-/251354115717?_trksid=p2054897.l4275

I'm guessing it's a small un grounded unit with an antenna maybe 20 to 100 Mhz.

My experiments with grounded Tesla receiver setups tell me that the power received from one crystal set is a only a tiny small fraction of the transmitter input power, eg There is a commercial grounded AM transmitter working at 840 kHz with a power of 10 Kw about 15 kilometers from me, I can tune into that signal with a small table top Tesla type receiver and hear the radio with High impedance headphones without using any input power at my end, or I can use an amplifier and play the radio on a speaker setup, the signal received is in the order of tens of millivolts and tiny current not worth trying to measure.

Maybe if you define the transmitter type and the crystal radio type as well as how you would place the receivers as in distance from the transmitter ect. someone skilled in radio engineering might answer.

My intuition tells me that if the transmitter was surrounded by receivers the output of the receivers would be less than the output of the transmitter no matter how you do it. But I'm not a engineer in the field.

Other way is to try it and then try to measure the power out of all the receivers to the speakers (not an easy job).

However if you are close enough to a high power transmitter and can tune to it with a grounded receiver of some size you might get a fairly reasonable output at the expense of some loading to the transmitter.

Some people in past times used one crystal radio to receive power at one frequency to amplify the output of another crystal radio at another frequency to listen to.

Cheers

[MenofFather]

Good Evening All

Check out this video:
http://www.youtube.com/watch?v=4C4vzlW0Oxw
at 7.50min.s he shows the Ground copper plate wrapped around the inner plastic bobbin of an ETD, EE type core.
Also shows the wrap configuration that he uses:

We need someone to translate this to English Please.


lost_bro

[size=78%]He not get selfrunning, so why need translate? And he not corect maybe wound cuper tape. Tape must be betwen winings.[/size]

[Google]

What is the range and type of the 0.5 Watt transmitter, (grounded conventional antenna, not grounded conventional antenna, Tesla style capacitive elevated terminal ? And what type of crystal radio receivers do you refer to, regular elevated wire antenna with ground or Tesla style grounded ?

Something like this maybe. http://www.ebay.com.au/itm/CZH-05B-0-5W-FM-transmitter-radio-broadcast-PLL-LCD-stereo-87-108mhz-/251354115717?_trksid=p2054897.l4275

I'm guessing it's a small un grounded unit with an antenna maybe 20 to 100 Mhz.

My experiments with grounded Tesla receiver setups tell me that the power received from one crystal set is a only a tiny small fraction of the transmitter input power, eg There is a commercial grounded AM transmitter working at 840 kHz with a power of 10 Kw about 15 kilometers from me, I can tune into that signal with a small table top Tesla type receiver and hear the radio with High impedance headphones without using any input power at my end, or I can use an amplifier and play the radio on a speaker setup, the signal received is in the order of tens of millivolts and tiny current not worth trying to measure.

Maybe if you define the transmitter type and the crystal radio type as well as how you would place the receivers as in distance from the transmitter ect. someone skilled in radio engineering might answer.

My intuition tells me that if the transmitter was surrounded by receivers the output of the receivers would be less than the output of the transmitter no matter how you do it. But I'm not a engineer in the field.

Other way is to try it and then try to measure the power out of all the receivers to the speakers (not an easy job).

However if you are close enough to a high power transmitter and can tune to it with a grounded receiver of some size you might get a fairly reasonable output at the expense of some loading to the transmitter.

Some people in past times used one crystal radio to receive power at one frequency to amplify the output of another crystal radio at another frequency to listen to.

Cheers

Many thanks for responding farmhand. What I was thinking was, can an extremely large number of AM crystal recievers placed around the 0.5 watt AM transmitter can suck all the power transmitted by the transmitter so that no more power is left in the transmitter to power even a single extra crystal receiever. I am refering to the properly earthed and arieled transmitter and crystal receivers.

Best,

[Thaelin]

  Hey Grum:


   Count me for two ( 2) as I like to play.  PM me with a total
and a bit of cushion to make sure and where to. 

thay

[ariovaldo]

Dear All.

First price back in late today.

For a run of 10 PCB blanks i.e. just board, no components £5.00. To Groundloops template attached below.  This would come down slightly if more were ordered !!

I am still waiting for Farnell to come back with the component costs. 

I have also wound my transformer today and had a "Dummy run" with a PWM driving the primary. Nothing out of the ordinary to report.

Will keep you all posted, Cheers Grum.

Just let me know how to get that.
Thanks
Ariovaldo