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5 cze 2016 · Simple and inexpensive to build the 9:1 end fed long wire antenna is a good antenna for both portable and home use. This antenna, like all antennas, has it advantages and disadvantage. You’ll see...
These are sometimes known as a Magnetic Longwire Balun. Its really an impedance transformer (9:1) to feed a high impedance, end fed (unbalanced) random wire which is likely to be a few hundred ohms, and transform it into something closer to a 50Ω (unbalanced) coaxial input, hence UnUn.
15 lip 2005 · I wanted to use the type M pipe for the added protection of the thick wall copper. I already tried using a conduit bender and that kinked it within a 10 degree bend, I like the heating idea. I will try heating and bending tommarow and let you know how it went.
13 mar 2019 · Tubing is usually soft and comes in coils. Water tubing is usually cold drawn and comes in straight lengths. K, L, and M are different wall thicknesses of water tubing ; an example for size 3/4 " is- K = 0.065", L= 0.045", and M = 0.032". All 3/4 copper water tube has a 0.875 " outer diameter.
In that case, 10m of wire on a pvc pipe with a 9:1 unun at the bottom will give you multi band. I do suggest perhaps you have a look at this video. This might be a good solution for you https://youtu.be/PXg7ZOAkDyg
3 paź 2024 · We’ll outline how to connect copper pipes, help you determine which method is right for you, and share some common applications in this guide. In the video above, This Old House plumbing and heating expert Richard Trethewey explains innovative ways to join copper pipes without a soldering torch.
This category contains Type M copper pipe straight lengths, available in 1/2", 3/4", 1", 1-1/4", 1-1/2" and 2" nominal sizes and 1', 2', 3' or 4' lengths.
