Survivor Antennas 1SM Series only
Installation Instructions
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Our Antennas are based on a tuned capacitor as a radiator and thus have slightly special requirements in order to install them correctly. If you notice pictures in the gallery you can see how easy they are to set up. But these photos show them being outside and in the clear from other objects. If you have a multiple antenna farm there are some things you need to know. You can download these instructions here: Download.
These antennas MUST be located a minimum of 5 feet from the ground in order to operate efficiently! 10 feet minimum is recommended.
They MUST be farther than 4 feet from the nearest vertical metal object when mounted.
The delay line MUST NOT cross the output connection of the choke coil. That is, the delay line coax cannot be laying on or over (touching) the output of the choke coil coax connection. This is true even if you have a choke in a box.
The choke coil must not have its input and output coax cables laying over one another. This will cause the choke to be partially bypassed due to slight capacitance of the coax jackets and the result will be unstable SWR.
Any conductive object near it will tend to detune it slightly. Most of the time this is not a problem and will show up as minor SWR changes. But allowing your coax lines to lay on top of each other and cross over each other will cause the delay line to partially couple to other coaxes and their connections causing strange SWR problems. You shouldn't coil the delay line up over itself, instead lay it out in a lazy S pattern to spread it out. And don't let your choke output lay over other incoming coax connections.
A typical installation is a 10 foot antenna mast made of metal, 1 to 1.25 inch's in diameter with the antenna sliding down over the top of the mast. The antenna has a stop bolt inside its mounting pipe to prevent it from sliding down too far. You can simply slide it down and forget it. Or you might want to drill a hole in your mast and use the stop bolt to bolt it to the mast so it won't turn but this is not necessary. On the output side of the choke, you can connect any length of 50 ohm coax you wish to your transmitter. A tuner is required for the 40,80 and 160 meter antennas if you want to cover the whole band and is recommended for all bands to make operation easier.
Unlike other antennas, swr variations do not effect the performance of these antennas. (on the band of operation) Field strength measurements prove this, but you should always keep the swr low for transmitter efficiency and maximum power transfer.
Download this Instruction Page here. Right click and choose 'save as'.
