| |
G3TMH > INFO 04.08.02 09:29l 58 Lines 1636 Bytes #999 (0) @ WW
BID : G3TMH000029
Read: DB0FHN GUEST
Subj: Re: Buried antenna.
Path: DB0FHN<DB0ZWI<DB0HOT<DB0HDF<DB0ERF<DB0ROF<DB0AIS<DB0ZDF<DB0LJ<LX0HST<
HA3PG<WB0TAX<N1UAN<VE9EMO
Sent: 020804/0407z @:VE9EMO.#FRED.NB.CAN.NOAM [TNOS2.30*LINUX] $:G3TMH000029
Yes what you are talking about did exist, but it wasnt exactly radio.
You just use two powerful audio amplifiers.
The audio out is stepped up in voltage by a transformer, and fed into two
earth spikes, the further apart they are the greater the range.
At the receive end you use two spikes far apart fed to the audio amp input
and it works.
I tried it many years ago, what was fascinating was that with a sensitive
pair of headphones mine were balanced armature, you could just plug your
standard 1/4 inch jack plug into the soil within a few feet of the system
and listen to the audio.
I fed music into my system, then could sit out in the garden on a sunny day
with my headphones plugged into the back lawn to listen.
Sheer magic.
Ken
ing
>To : INFO@WW
>
>G0TEZ/TPK 1.83c Num 212 01-08-02T19:01:55 GMT: COLNE,Lancs:
>
>
>>> ***********************************************
>>> LID: Wants to work ground wave, buries antenna.
>>> ***********************************************
>>
>I keep seeing the above tagline, this time from W0RLI. There really was
>(is?) a ground wave radio, one of the many inventions of Heinrich Hertz.
>
>Designed for military use, it transmitted via two spikes in the earth.
>I don't remember anymore about it, I'd have to find a book on it.
>
>I don't know what a "LID' is though, perhaps someone can enlighten me.
>
>All the best *
> /
> ~/~
> -----73---Ian.
> "" ...............""""""
> PEACE ON YOU MAN
> iang0tez@fsmail.net
>
>
>
>
>
From: g3tmh at gb7abc.freeserve.co.uk (Using HamServ)
Read previous mail | Read next mail
| |
