It operates like a send/return loop. You can toggle the signal routing from the front panel to either use the external device or not. I know for a fact it will work for the transmit antenna since tha
That is called "sealing current". It's been used in the telecom industry for ages. The spec is <20mA though, and you can get by with only a few mA. It helps to prevent various corrosive forces from d
Solid will generally hold up better regarding corrosion, but stranded holds up better if subjected to mechanical stress. Solid is also easier to solder properly, imho. Pick the type best suited to th
Just a helpful tidbit for anyone working with motor controllers / drives / VFDs / frequency drives / etc. (lots of names for the things :-): The manufacturers usually specify that the wiring between
You need to use a two-level strip. Ideally, use a proper coax stripper (the kind that spins around the cable with little razor blades inside). You want about 1/4" of braid exposed past the outer jack
Probably not much, you're only a very small percentage outside the calibrated range for that slug. That assumes that the slug is ok (not dropped, etc). You can check them several ways. I use a calibr
With some quick calculations and a check of a chart of wire gauge and resistance, that 25 ohms for 400m is about 19 ohms/kft which works out to something between 22 and 23 gauge copper wire. I don't
Try calling one of the cable TV contractors, many of them are small (as in VERY small) companies with only a few employees. They might help you out for a little money or even just some beer. For the
Galvanized can be a problem in some soils. This is the reason that galvanized ground rods are no longer recommended in most applications (I think ON4UN even has a pictured of a rotted galvanized grou
Ah, sorry if I misinterpreted what you meant. Regarding "proper" galvanization, such things CAN still be had. There are two kinds of galvanized products these days: "flash" galvanized, which is usual
To add to what Jim had said about this "smells like a Variable Frequency Drive [VFD]" (which I also think is probably what you're seeing here): VFDs operate by varying the power to a three phase moto
What you're missing is that a conductor carrying an *alternating* current, like RF, also has reactance. Reactance is influenced by capacitance and inductance. The earth, being essentially somewhere b
I will add that the ground rod driving attachment for SDS drills (a type of hammer drill) is your best friend if you have a number of ground rods to install. Especially in rocky ground. Once you've u
2% is about what the lead-free electronic solders are (they are a tin/silver/copper alloy and are mostly tin). Don't bother with the 30%. My mechanical contractor uses this stuff to fix things he can
If it's to be a seasonal installation, you'd be OK just running a rope around the branch. When attaching to a tree for the short term, what you want to avoid is chafing and abrasion of the tree's bar
If you're trying to find a suitable box to mount *in the wall* that will fit two duplex receptacles and some filters, try a 4-11 box (4-11/16" square) that is 2-1/8" deep (this is a standard size). Y
Ganged outlet boxes are no longer a good option. In years past, they were fairly beefy. Modern ones are lighter gauge steel and too flimsy to hold together outside of a wall (and too flimsy in the wa
You could use a small Kellums grip (Chinese finger handcuffs) to grab the cable. I know those can be found small enough. The other thing you could try would be to run the RG58 around a thimble (usual
Digikey carries Panasonic's line of ac Lin filter caps. They are " Sent from my iPhone _________________ Topband Reflector Archives - http://www.contesting.com/_topband
Digikey carries the Panasonic ECQ-UL series film capacitors that are rated for use as ac line bypass caps. I've used them before in thyristor (triacs, in this case) phase control drivers. They are du