开云体育

I'm wanting to make a RX loop to bring in WSB 750 from Atlanta. I used to live so close to the transmiter I could take my phone off the hook and hear them fine. Now i'm about 70 miles north and

Open source space. Free GPL. It's a great place! jr_dakota wrote:

I'm too cheap to used paid space so free space it is ....

I came across the loopantennas group yesterday when I was trying to search for loop construction details. So far I have found a lot of good posts that have been very informative. On to the issue… I

At 03:14 AM 3/9/2007 +0000, you wrote: >Hello! > >Thanks for letting me join this loop antenna group. > >I'm new to loop antennas. I've been looking at several designs to >build. There are a few

Hi Lee, The easiest way to get started with a LW or MW loop with the kind of receiver that uses an internal ferrite loop antenna is to build a tuned loop and couple it to the receiver through mutual

Radio Plus makes the Q-Stick+ <http://www.dxtools.com/QStick.htm>, which is a tunable, large ferrite antenna that covers LW and MW. I've used mine with my DX-398 on LW. It's not going to get you

Hi Lee, DXing LF beacons has been a radio interest for me for many years, but I've always used tabletop receivers and outdoor antennas. Local noise is the main problem most folks have when trying to

If there is a processor Its probably a PIC. But ,, who in their rite mind would put a processor in a box containing a high gain amplifier. I doubt they would go all the way needed to make the chip

Hello! Thanks for letting me join this loop antenna group. I'm new to loop antennas. I've been looking at several designs to build. There are a few interesting designs. My local MW band is stacked up

It was a ZTX337 (the marking on the transistor was not even erased). I never got an hold of a ZTX337, but the circuit works also with matched 2N5109 transistors with comparable OIP3 and OIP2 figures.

Hi All- Just discovered the group. Also just discovered NDBs! I have a Grundig YB 400 PE and Radio Shack DX-399- both with only ferrite antennas. Am studying various loop options, but wondering if the

Hi, Probably a careful electrician could easily open it up and find out, what is ticking in it.... Of course any transistor can be identified without any text available on it, but who could diagnose a

Fine! A WELLBROOK CLONE! Please tell us more about it. I have been trying hard to buy one, but nobody ever answered my many emails from England............... So I have tried to build one of my own. I

The thing you need to keep in mind is that all those formulas are approximations, mostly fitting to empirical data, and they all come with limitations. If you use the formula outside of those ranges,

Hi Alain, The ratio of a circle's circumference to its diameter is 'pi' or approximately 3.14. So if the circumference of the loop comes to 272' ... eg 80M, then the diameter of the circle would be

Hi,thanks to you All for your answers to my question.If 4.38 microhenry is the correct value,at 2 Mhz the reactance XL will be 55 ohnm..at 4 Mhz 110 ohm.For an untuned one-turn loop," without link", a

and that is indeed one fine meter P

Digital LC Meter ... <<< Hi JR, I'm impressed! You're the only person I've ever met who's been to free space and returned, let alone taken an LC meter there. (Sorry, I coudn't resist!) Dave