100's of small loft, garden, shed random 1 hour stations ?

Discuss UK-based Radio outside the South East of England
e.g. Birmingham, Bristol, Leeds & Manchester
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FMEnjoyer
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100's of small loft, garden, shed random 1 hour stations ?

Post by FMEnjoyer » Sat Feb 02, 2019 9:30 am

Just had an idea that if a large number of people set set up high quality little non sproggy PLL rigs in lofts gardens shed, hills, cars mobile and came on for 1 hour randomly. And I mean truly randomly, not at various times on a Saturday etc. I suspect it would make it both pointless and difficult to be tracked.

Non commercial
Your own favourite music played
Random hours

It would hugely reinvigorate the pirate scene and bring back that much missed excitement it needs. As far as listeners you do for the love, the anorak side of it for the broadcaster and listener.

Could be anything non presenter with just a station ID and favourite tracks played.

I am so bored of pirates I listen to small community stations as they are 10 x more interesting.

Any thoughts on this ?

Albert H
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Re: 100's of small loft, garden, shed random 1 hour stations ?

Post by Albert H » Sun Feb 03, 2019 1:47 am

It would be like the early days of land-based pirate radio in London. There was the "Helen Network" which was about a dozen stations on Medium Wave that all used the same frequency and would switch on and off each hour, so that the signals came from many parts of London, causing the lads from the Post Office (responsible in those days) all sorts of hassle.

The aerials MUST NOT be indoors - you lose 90% or more of your signal just warming up the roof tiles! There are plenty of simple and cheap to build aerials that don't look like the obvious dipole! One quick and cheap aerial I have used with great success at music festivals is the twin-lead Slim-Jim, hung from a tree. It's not too obvious, it's easy to install, costs next to nothing, and you can roll it up into your pocket for transportation!

We also need a good, reliable, easy to build PLL rig at a reasonable price. I'd be inclined to use a simple "at-frequency" design - FET oscillator, a couple of transistors to get enough drive, and then a 15 Watt Mitsubishi FET for the final. The PLL can be a PIC and a TSA5511 or whatever. It might also be worth including one of the cheap Chinese MP3 player modules in the rig, so that you can plug in a USB stick or an SD card with your one-hour programme pre-recorded on it.

It should be a "12V" rig, so that it can be run from a car battery or other rechargeable type. There should also be a timer facility and (perhaps) a real-time clock, so that the rig can be installed up a convenient tree or rooftop, and programmed to start and stop itself at the required time..... This would reduce the problem of going to collect a "hot" rig - you can wait a while when another site has taken over the frequency, then collect it in safety.

Done right, this could be a lot of fun!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

FMEnjoyer
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Re: 100's of small loft, garden, shed random 1 hour stations ?

Post by FMEnjoyer » Sun Feb 10, 2019 9:47 am

Thanks for info. I am interested in a roll up slim jim. Even the rough starting dimensions for FM would be good. Presumably lowest down the band would result in the longest antenna. I suspected you would be interested Albert. I think it is a shame there seems to be little traction.

I suppose many want the call ins and audience of a big station. I like the idea of a quick connection and vanishing, much more mysterious and at truly random hours. And also 100 times more interesting. A low power PLL on for an hour is not going to hurt anyone, even the authorities needs to be sensible about things. And rig theives would not get a chance to locate it either.

If anything it is a type of exciting yet sustainable radio for modern times.

If I could turn on and hear 1 or 2 responsible locals playing totally different music for an hour each hour that would be a lot of fun.

Albert H
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Re: 100's of small loft, garden, shed random 1 hour stations ?

Post by Albert H » Sun Feb 10, 2019 1:11 pm

As I said - done right, with some co-ordination and planning, it could be a great way of minimising equipment losses whilst maximising the audiences. You'd need to choose a couple of frequencies for everyone to use, so that the listeners would know where to look. This should be easy to achieve. There would have to be a "gentleman's agreement" that no big, high power station is going to grab either of the frequencies for themselves.....
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

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teckniqs
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Re: 100's of small loft, garden, shed random 1 hour stations ?

Post by teckniqs » Mon Feb 11, 2019 12:27 pm

Albert H wrote:
Sun Feb 03, 2019 1:47 am


The aerials MUST NOT be indoors - you lose 90% or more of your signal just warming up the roof tiles! There are plenty of simple and cheap to build aerials that don't look like the obvious dipole! One quick and cheap aerial I have used with great success at music festivals is the twin-lead Slim-Jim, hung from a tree. It's not too obvious, it's easy to install, costs next to nothing, and you can roll it up into your pocket for transportation!

I saw something like this a few years ago, it was made out of the (domestic FM 'T' dipole) transparent cable with the large clear plastic gap between the two copper wires and I was told it was a fold up slim jim.

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Re: 100's of small loft, garden, shed random 1 hour stations ?

Post by yellowbeard » Mon Feb 11, 2019 7:21 pm

Here is a calculator for slim jim/J-Poles with details on constructing them out of twin feeder if anyone wants to play:
https://m0ukd.com/calculators/slim-jim- ... alculator/
Do we need a thread on the technicalities of this?

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