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I need to build a platform on top of my apartment building to get 360 degrees clean space for my new babyloop. My babyloop is a 1 meter loop. The platform will be at the corner of the building. It

Oh I also forgot to ask Looking for a design for a 1:1 isolation transformer Qro from 160-40m.. Have 2 240-61 cores suitable but not sure on amount of L to wind on.( ptfe silver plated wire)

?Hi Steve Tom and Alan WELL DONE TOM!! Brilliant!! First sorry for thread hyjack. Yes new qth took months of hard work to buy, 2 attempts at selling ours.. Place needs lots of work. Garden was

I cannot find John Delvodere's,?ON4UN, book "Low Band DX'ing" on the RSGB web site. The ARRL cleared out their stock of the current (5th) edition a few years ago.? They have since reprinted it, but

Well Done That Man! There is a key point in comparing active loops by off-air signals that now you can appreciate. If you are in an average or bad urban setting then the noise floor is so high that

Hi Alan Simon g0zen Have just moved from Dagenham to Bittaford inside the dartmoor national park.. Noise floor on 160-40 dropped from s7 to s1.( occasionally s3) .and thats on the Marconi T tx

The basic problem is that when you are inside a building you are surrounded by wiring conducting high noise levels? from the vast number of electrical devices near by. These fields are NEAR FIELDS,

ALL BOARDS HAVE BEEN SOLD, I will build more in a couple weeks, or so.?Everett

Good to read positive suggestions, Darren ! Michael UK

Another source of regen receivers and innovative loop and resonant circuits are the groups involved in crystal radio work – these folks use both unpowered (crystal) sets and regen sets for

You don't need an antenna at all nor a receiver.? Use a remote receiver via the web, KiwiSDR link <cid:part1.DDlP00Fb.gQCFrCr1@...> Each receiver varies a great deal in performance and it's

The UK doesn't end at the M25, does it? Is it a horizontal (wrapped around the ceiling) or a vertical loop (wrapped around the window)? -- Ottavio Caruso A: Because it messes up the order in which

A remote SDR is surely better. 73 de Federico IZ1FID -----Messaggio originale----- Da: [email protected] <[email protected]> Per conto di Simon Inviato: venerdì, 10. febbraio 2023 11:21 A:

I was ( but forgot) to post a similar response.. Ie regen?? In london?? In a bottom floor concrete block with no chance of an external antenna? For cw?? Forget it! Had a quick look on ebay,

i am not the original poster. However, your last comment struck a particular chord with me - Am i a glutton for punishment? Why yes, and thank you ! ? :) The rest of what you write makes perfect

It seems to me the answers you got so far were not very helpful. If the idea of crossing a large lake in a kayak, with the wind often against you, you might enjoy the sport of "regenerative

A regen receiver relies on being on the edge of oscillation. Any extra tuned circuits coupled to the transistor will pull that off frequency, and likely cause it to shift between the resonant

I am convinced, that the greatest problem is the stability, which you can not achieve with regen. When you receive SSB or CW, even some better commercial receivers (such as SONY ICF 7600) are

Regens are just fun. What other total receiver can offer demod of AM, CW, SSB, and FM in a pinch through slope detection with a single active device?! Sure, they're finicky, but perfect for us old

Good question Ottavio, The thing that comes to mind is that with regens strong signals can injection lock the oscillator. Feature or bug depends on usage. Good for AM usually but not for CW or