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Portable operation

PostPosted: Sun Jan 01, 2017 2:08 pm
by M0GLU
Hi All,

Happy New Year!

I'm planning for the new year, various places in England, portable opertaion on HF bands.

Are there any restrictions or any public place can continue the activity?

For example, parks, beaches, forests, mountain tops.

Thanks

73' Tony

Re: Portable operation

PostPosted: Sun Jan 01, 2017 4:08 pm
by G4RMT
The problem with many public places is that use of them means you will also need to be aware of any bylaws that are in place, and many of those are quite difficult to actually find. Probably the simplest is simply to ask in advance from the local authority who controls them. The usual problems are the bylaws that prohibit overnight parking, camping, tents etc. Many also are there to ban public gatherings, or drinking, noise, portable structures, litter, flammable materials, prohibited substances, fires, swimming etc - so it's vital your intended use doesn't accidentally cross into this territory. Parking overnight a club caravan, having a barbecue running a generator and noise could all mean your presence is unwelcome, if somebody decides this after a complaint. Far easier to email the council, explain what you want to do and then wave the reply at anybody who asks what you are doing. National Trust land is quite difficult to get permissions for, as is land administered by people like my area - the Broads Authority, who have all kinds of rules for their public land.

Re: Portable operation

PostPosted: Sun Jan 01, 2017 5:18 pm
by M0GLU
Ok, Thank you.

I understand, but I think only 1-3 hours for the activity.

I don't use petrol generator, just baterry operated QRP and simple vertical antenna hold on my car, or simple dipol.

Are people engaged SOTA activity.
How they do it? The SOTA basically QRP activity and battery.

Thanks

Tony

Re: Portable operation

PostPosted: Sun Jan 01, 2017 5:25 pm
by m0lsx
I do two different types. One from a car, where I am more static, have (in general) a better antenna & a bigger & heavier battery. And the the pedestrian portable. That is as light & small as possible & even doing that long distances are possible.
I like operating from under a kite. I do 4 meters occasionally & there I use a tail (counterpoise) to improve performance & I occasionally do the same with small HF antennas, as a few extra wires can make the difference between DX & nothing at all.
What radio are you using?
For pedestrian portable it's an 817 here, for static portable it's a big heavy deep duty cycle caravan battery & a 100 watt radio.

Re: Portable operation

PostPosted: Sun Jan 01, 2017 7:41 pm
by M0GLU
Yes, I like the simple mobile/portable operation with QRP.

I have the Yaesu FT-857.

It's compromise, good for my home station with stabil power supply and good for mobile/portable activity.

I would like to use the 12Volt 36Ah baterry.
(example:http://www.ebay.co.uk/itm/331308371993?_trksid=p2060353.m1438.l2649&var=540501278129&ssPageName=STRK%3AMEBIDX%3AIT)

The antenna it would be a multiban HF vertical, and simple dipol and longwire and mobile VHF/UHF of course.

Those are by or making, I have not decided it yet.

I do not want to stay in one place for long.
I will then hiking with my wife.
She supports my amateur radio activities, but do not expect that You sitting quietly for several hours. :-)

I look forward to the ideas mainly antenna case.

If someone uses multiband HF mobile vertical, which is good.

Thanks

Tony

Re: Portable operation

PostPosted: Sun Jan 01, 2017 8:44 pm
by m0lsx
M0GLU wrote: The antenna it would be a multiban HF vertical, and simple dipol and longwire and mobile VHF/UHF of course.


If someone uses multiband HF mobile vertical, which is good.

Thanks

Tony



A HF multi band is a BIG compromise when portable & using low power. There are antennas around that work, look for anything used or recommended by G-QRP or a group in California, who have put some good options out there.
The real issue is that small is not efficient & multi band is not efficient, so mix them together & no no matter what word you add to the designs name it will not be a wonder or a miracle & added to low power operation, it will not make for a good experience.

Google says NORCAL,,
http://www.norcalqrp.org/norcaldoublet.htm

The above is made using 4 core PC ribbon cable & is apprently a half reasonable antenna.

Also have a look at the ZS6BKW, it's similar to a G5RV, but not deaf & actually resonant on several bands..
https://www.nonstopsystems.com/radio/pdf-ant/ZS6BKW.pdf

The smallest antenna I use that is even close to semi efficient is a small loop & that needs a big tuner & is really not much use below 20 meters at low level, due to coupling.
Have a look at small quarter wave verticals for a couple of bands, a 10 meter roach rod would give you 40 meters & up.