Hi, I need to coat the spreader arms of my quad. Options for coverings are limited to what I can source here in Thailand. I can buy polyurethane finish but even the exterior grade ones I have seen ar
I've long been a quad aficionado and have generally devoured any information I can find on them. The double driven W6PU quad is an example of something a little different that suggests it can still b
I think I've got one of these. Dashed great behemoth of a rotator, almost a steampunk piece. Not sure I will ever be able to make any real use out of it but I would like to see if it's functional. An
Beware when using a smartphone app compass, It may direct you to download an app for a virtual owl, this is known to be buggy and may refuse to indicate true north. A further app for a virtual wench
I think the Cobweb(b) antenna is an excellent antenna for limited space with usefulness as a second antenna for those with a bit more space. I've seen a lot of discussion about its use in the horizon
Hi, Looking forward to a good few weeks of free time in the near future and one of the things I want to try and achieve now the better weather is coming is to finish the rework of my 5 band quad. Act
Dan, Many thanks. That pretty much says what I wanted to know (and a whole lot more!) It seems to me that a just reach length, or rather some arbitrary length close to that is going to be the best co
Definitely not feeling the Google love today! Anyone have an idea of the 30MHz power handling capability for RG6A/U and Belden 9104? I have some RG59A/U as well but having seen RG58 melt I'm not incl
Thanks for all the inputs, much appreciated. Maximum run length for the 75 ohm cable would be 1/4 wavelength on 28MHz. For other bands just a couple of feet as a series section transformer in each ca
Yet they must be made. Bird, who may well make them for their own use mind, uses a 'N' - male 4 hole flange mount on some of it's dry dummy loads and maybe other products. I suppose if you really nee
Hi, Can anyone recommend a UHF male plug with either a soldered or crimp centre and a crimp braid connection suitable for RG213/RG8 cable. Supplier and Part num would be ideal. Preferably no pot meta
Thanks to all for the very useful information. My friends have just taken delivery of a large matrix for their contest and remote station so there are a lot of connections that need to be made/remade
I've recently made something similar. From parts of an old KLM 4 element 20m monoband yagi with half an element missing and no need for a monoband antenna I refurbished 3 of the very tatty elements a
4NEC2 is free :-( Several hundred segments, built in optimiser Martin, HS0ZED I will try EZNEC but am limited to 20 segments. Perhaps 10 segments per dipole will be enough for the case of two separat
Hi, I'm restoring a Telrex A3695RISX rotator. It's quite a monster but if I can figure out a way to use it I think it's unlikely I would ever need anything bigger, 1/3hp reversible AC motor, dual wor
Hi, Just wanted to thank everyone for the great replies I received both on and off list. Some good ideas and generous offers. It really s quite a big beast but the overall simplicity would suggest it
For a home made close coupled dipole I used clear plexiglass sheet, about 1/4" thick. I laid strips about 1" wide and long enough to overlap the elements then drilled holes to take a UV resistant cab
Jim (and others), I'm moving away from the selsyn idea I think. I've had some good encouragement from Jeff at Green Heron and I think there are better alternatives today, without getting too fancy. M
I have an old Emoto that has a solenoid brake. Works a bit different to the CDE/Hygain/MFJ but similar idea I think. The big Telrex has a double worm drive to chain output drive. Any attempt to reve
Hi Grant, that was me, and I think Jim Lux. Many thanks for the link. Martin, HS0ZED Grant KZ1W On 11/19/2018 15:28 PM, jimlux wrote: On 11/19/18 1:41 PM, Al Kozakiewicz wrote: The defeat of the Nazi