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Earthing and the radio amateur

I've recently joined the IET forums. I replied to a topic regarding amateur radio and PME on the old forum. Unfortunately I cant access the old forum anymore so I thought it would be best to start a new topic.

So. On the bench there is a transceiver with a metal case. Next to the transceiver there is a antenna tuning unit which is connected to a antenna system which is using an earth rod. Am I right in saying there is a chance of a potential difference between the two metal cases of the equipment regardless if it is a TT, TNS or TNCS?

What would be the ideal solution? Put the shack on it's own TT supply and bond all the radio equipment back to the MET of the TT and if a earth rod is used for the antennas connect that back to the MET also?

If the TT system was not an option what would be best if the supply was a PME and you didn't want to use balanced antennas removing the use of an earth rod?

To be honest I've never really given PME's and amateur radio much thought which in hindsight was probably a mistake. I do remember when I did my training an earth rod was recommended for the radios.

Apologies for being so random.

Stewart M0SDM

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0 John Peckham over 4 years ago

I am currently running 100W of SSB into dipole in the loft with a 1:1 balun. I tried to work on the 5MHz band recently but on receive other stations were underneath 7 S points of noise. I can work 14MHz with generally around 3 S points of noise. Propagation conditions are pants and looking forward to a change in sunspot activity.

I have entered a circular planning phase for an outside aerial to replace my loft dipole. I would prefer something multi band and have considered an end fed wire in to an AMU with an external earth rod. I have a couple of AMUs including a very nice ex military Clansman unit. My concern is RF radiation in my office upsetting my computer and periferals.

Any advice on a multi band HF aerial for a house with a short garden that has a low visual impact? Or should I give up and just erect a dipole for 14MHz with a 1:1 balun outside?

Also I have a roll of 10mm single black conductor. should I leave the insulation on or strip it for less weight, lower wind loading needing less support and visual appeal?

JP G8NUP
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0 John Peckham over 4 years ago

I am currently running 100W of SSB into dipole in the loft with a 1:1 balun. I tried to work on the 5MHz band recently but on receive other stations were underneath 7 S points of noise. I can work 14MHz with generally around 3 S points of noise. Propagation conditions are pants and looking forward to a change in sunspot activity.

I have entered a circular planning phase for an outside aerial to replace my loft dipole. I would prefer something multi band and have considered an end fed wire in to an AMU with an external earth rod. I have a couple of AMUs including a very nice ex military Clansman unit. My concern is RF radiation in my office upsetting my computer and periferals.

Any advice on a multi band HF aerial for a house with a short garden that has a low visual impact? Or should I give up and just erect a dipole for 14MHz with a 1:1 balun outside?

Also I have a roll of 10mm single black conductor. should I leave the insulation on or strip it for less weight, lower wind loading needing less support and visual appeal?

JP G8NUP
Cancel
Vote Up 0 Vote Down

Cancel

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Earthing and the radio amateur

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