ARmy Rumour SErvice

**polar69** · 12-10-2011, 14:35

Dodgy comms in that area, rocky outcrops and hills big chance of screening making groundwave difficult if not unworkable, however h wire end fed NVIS should be ok. :P

**polar** · 12-10-2011, 14:41

But voice is so last century.

**Ord_Sgt** · 12-10-2011, 21:47

Originally Posted by polar

But voice is so last century.

Just a guess, but you've not done well in life have you? Gobby shit but never really done anything?

**polar** · 12-10-2011, 22:48

^Is that A&P envy?

**PoisonDwarf** · 12-10-2011, 23:36

Originally Posted by Ord_Sgt

Just a guess, but you've not done well in life have you? Gobby shit but never really done anything?

Come on now, the guy was trying to say that it must be fax's chance for the limelight

**polar** · 14-10-2011, 06:28

Or line..... bring back the horses + line trailer for laying line (/network cables)

**polar69** · 11-06-2012, 21:17

Thougth I'd drag this fossil up from the depths instead of starting a new thread.

A+P gurus and know it alls, lend me your ears.

I have a flat roof, it is 8m high
If I build a horizontal dipole on the roof with .5m clearance for the purposes of electrical insulation etc will the radiation pattern form as if the ae was 8.5m high, or .5m high ?

Assuming the roof is non ferrous

I think its 8.5m as the building isnt a solid object and the radiation pattern would be similar to that as if it was on a mast.

What do you think ?

**chocolate_frog** · 11-06-2012, 21:33

Like you say, if there is no ferrous matierial inthe shed then it should be as per a 8.5m high antenna... however, depending on your frequency this may not be teh be all and end all.

For example, at certain frequencies you may find that rain water collecting on the roof makes it .5m above 'ground' again.