Rogues Gallery

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Rogues Gallery

Postby 2E0RFU » Mon Oct 13, 2014 1:08 am

I know there are a few others on here who are interested in emergency comms, this is my current Hand-held collection, mostly used day to day to access various Internet Linking Systems, but all programmed up ready to be used together in an emergency.

Looking to add another couple of BF888's to the collection to be left @ work and then add other features to the cases they are kept in like external batteries, antenna options and headsets. I use a simple colour marking system for the BF888's so I know which is which and could also be useful for identification of a station in a situation. I am hoping to work on getting the ANI side working on these with the KG-UV8D.

The UV-8D does cross band repeat so could be used to link two separate user groups on VHF or UHF or could be used by a control station to monitor another group. I am nothing extra for this yet but plan to obtain additional battery packs and antennas.

the UV-5r will possibly be complemented with a couple of UV-82 or BF-B5's to add more VHF capability, however this probably happen after the UHF side is sorted.

All good fun, potentially useful and does not break the bank.

Image
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Re: Rogues Gallery

Postby m0lsx » Mon Oct 13, 2014 8:22 am

The problem is the first thing to go during an emergency is the electricity & with that the repeaters. This is one of the reasons why the Police system is so fragile. The original contract for Airwave specified up to 3 days survival without mains on many of the repeaters, but most will go off immediately & the rest over a few hours.
The day after the Japanese tsunami, I was involved in a City Council flooding exercise here in Norwich. There were two of us involved & our only role was to test various formats of handheld radio communicating between City hall & various locations within the Medieval building that was the evacuation point.
All comms had to be VHF simplex.
I started off using the standard duck on both my VX-7R & my Puxing VHF. I then tried two different longer ducks, my mini mag & my 5/8th wave mobile antenna & my ladder folded dipole (slim jim) on a 10 meter roach pole.
My emergency radio box which is ready to grab. Has an 817 with VHF antennas a HF wire with ATU & balun, as well as a solar charger, gas soldering iron & a few other bits in it. Beside that is my VHF bag, this has various slim jims & other VHF antennas in it, as well as VHF & UHF handheld radios & various adaptors for the antenna connectors. And sitting in the same place is my roach pole & my two portable battery packs with shoulder straps.
I also have a large caravan deep cycle battery easily to hand & some extra solar chargers & a stable lifting kite that I can lift a cross band handheld with, for extra range in an emergency.
I am also considering building a QRP VHF band 2 broadcast transmitter that transmits via a Zepp type antenna & setting it up to take a feed from my VHF handheld, so in a real emergency information could be passed over a large area using the VHF band 2 broadcast spectrum from under one of my lifting kites.
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Re: Rogues Gallery

Postby 2E0RFU » Mon Oct 13, 2014 12:23 pm

Sounds like you have a really good setup there M0LSX, especially with the kites. Do you have any videos / more info on those? I can imagine they really do the job in a reliability flat area like yours. We are blessed / cursed with being pretty hilly around here so it is possible to get on high ground pretty easily but extra height would always be welcome. It sounds like you have a pretty comprehensive setup there do you get out and test it all often? I had not thought about tools so I will work out a plan and look at getting a small but useful kit together.

My current kit is mostly to cover my immediate area and the local town center, expanding out as I build up more kit.

As you mention the power will be first to go, so I am looking at batteries, I have mentioned on another thread that I have modded the BF-888s to charge from USB, I picked up a nice USB battery pack from Aldi which would charge the bf888 5 times, I am looking to get more of these.

I have also ordered the parts to build a simplex repeater which would run from battery and an use an Arduino as a controller, I think with a decent battery and solar it could be very useful if it was up high.
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Re: Rogues Gallery

Postby m0lsx » Mon Oct 13, 2014 4:31 pm

I use a 6 foot wing span Cody & a large Sled kite, which needs 300 lb breaking strain line. I also have a couple of others, but they are my main lifting kites.
I tend to mainly operate the kite on HF using a zepp antenna. As the lower part of the antenna radiates, so using a kite on a simple end fed does little to improve matters unless you can lift the base of the radiating element.
I have lifted a legal FM transmitter connected to a cheap MP3 player & even without an antenna system (to remain legal) the range seemed fair. The cheat to remain legal & still radiate better is to use a longish feed between MP3 & TX.
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Re: Rogues Gallery

Postby 2E0RFU » Mon Oct 13, 2014 5:15 pm

Just had a quick look at a video of a Cody kite they made it look very easy to fly, not sure I would find it so, I remember being pretty lame at it at flying kites as a kid.
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Re: Rogues Gallery

Postby m0lsx » Mon Oct 13, 2014 5:34 pm

This week is the anniversary of Samuel (Not Buffalo Bill) Cody making the very first aeroplane flight in Britain.
Cody, or more precisely, his second wife, is a descendent of John Simpson, the BBC journalist & Cody was lifting men as high as 2000 feet on a regular basis using his kite, which was designed as a man lifting kite, to be used as a military viewing platform.
Cody moved on to powered flight & died in a aircraft accident.
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Re: Rogues Gallery

Postby 2E0RFU » Mon Oct 13, 2014 7:56 pm

Thanks Alan

That is interesting just spent some time looking at some videos, it maybe something to try out next year when camping.

Just now browsing the usual sites for bits for a toolkit.
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Re: Rogues Gallery

Postby m0lsx » Mon Oct 13, 2014 10:03 pm

If you put a wire up under a kite, make sure you bleed the wind induced static off before it gets to your radio & kills it. It is not hard to do & despite what some say, we do get an issue with it in the UK.
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Re: Rogues Gallery

Postby 2E0RFU » Sat Oct 18, 2014 5:30 pm

Too the BF-888s out for a range and antenna test to decide on the antenna to equip them all with. Actually the stock antenna won by far, over the NA-771, NA-773, & SRH-805, no surprise with the last one but I wanted to see what the difference was.

I did plan on filming it all, but I ran out of space on the memory card, should have checked I had put the right one in before I left.
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