Jump to content

woodwose

Full Members
  • Content Count

    89
  • Joined

  • Last visited

Community Reputation

113 Excellent

About woodwose

  • Rank
    Full Member

Contact Methods

  • Website URL
    http://www.nigelworld.org.uk

Profile Information

  • Gender
    Male
  • Location
    Ludham, Norfolk Broads
  • Interests
    Scouting, Ham Radio, Meccano

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Quick update on this. Thank you to everyone who commented and/or sent corrections, or just had a look at the book. We have made the decision to print an actual paper book and this will go to the printers in the next few weeks. I have now changed the website and there is a sample chapter on there incorporating all the latest changes. Nigel. Webmaster, Ludham Community Archive Group
  2. I currently drive a Honda Civic Estate car. It is a diesel. It has a lot going for it. It is exempt from road tax and does about 70mpg. It really is cheap to run and actually costs me less than the boat. I use the cheapest possible supermarket fuel with no additives. Ludham garage do good servicing and I use etyres for tyres. However, prior to this, I ran a Land Rover Freelander for 14 years. It was noisy and slow and used twice as much fuel as the Honda, but it was a lot more fun. It was fantastic off road and I have rescued all sorts of cars and caravans with it. It took so much stuff to Scout Camps and towed massive trailers with ease. My grandchildren loved it and even made up a song about it called "Dear old Land Rover". This was after I rescued a BMW which was stuck in soft sand at Horsey beach. In fact, it was so much more fun that I am now thinking about buying another Land Rover. Maybe a Discovery Sport or one of those squashed Range Rovers. I think it would have to be a hybrid engine now. I am not a big fan of cars and don't like driving but the Honda has clearly demonstrated the difference between fun and boring. Give me the fun any day. Nigel (Ludham)
  3. Hi Griff. I can't speak for any particular aerial because I have not used any of them. Here are a few more thoughts By definition, omnidirectional aerials cannot have any gain. A true omnidirectional device actually has a gain of -3db. Some of the aerials on the market claim to work from 40 to 900MHz. The chances of such an aerial being resonant anywhere near the frequencies used by the Tacolneston transmitter are not great, so that is a further loss. Such aerials are accompanied by a broadband amplifier which also amplifies the noise as well as the signal. Inside the plastic globe or flying saucer will be a sort of folded dipole which resembles a bent coat hanger (there may be more than one). This is the actual aerial. The higher this is the better it will work. I am not saying that omnidirectional aerials don't work and they have the big advantage of working on swinging moorings. If I was buying an aerial, I would get a Yagi made for Tacolneston (Group BH). I would mount it on a pole as high as possible and would not use an amplifier. An 18 element one would be better than a 10 element but it depends on how much room there is in the boat to store it. Hope this helps Nigel, sunny Ludham
  4. Hi Griff. The aerial itself has no gain, but the one you are looking at contains an amplifier which claims to have 23.5db of gain. Nigel
  5. You can get information about Ham Radio from the Radio Society of Great Britain (RSGB) website: https://rsgb.org/ To obtain a license you have to go on a course which is normally done via a local radio club and then take an exam. There are various levels of license you can obtain by working your way up. Frequency bands are many. For shorter distances and point to point stuff we tend to use the 2m band (144MHz) or 70cms (432MHz). There are various repeater stations you can use to get coverage all over the Broads. The Norfolk Broads repeater GB3NB covers the whole area and well beyond. You can hear it on 145.025MHz Hope this helps Nigel, Ham Radio Station G4AXA, Ludham
  6. Yagis and Log Periodics look similar. However, Yagis are more oblong looking with most of the elements about the same length. Log Periodics tend to taper more with the elements getting shorter and shorter. Having said this, there are lots of different designs so it can be a bit difficult to tell. If you are buying a new one, the seller should know. I think RG6 co-ax is commonly used for short runs with freeview and should be fine for boat applications. There are waterproof and low loss cables available if you want to spend more. Lots of places sell it - Screwfix, Amazon Toolstation and many more. Any aerial shop should also have cable. Hope this helps Nigel
  7. I can't recommend any particular aerial as I would not dream of watching TV on the boat and so don't have one. However, I am a radio ham with lots of experience of messing about with aerials so I can give out some information which I hope is helpful: The TV signals on the Broads come from the transmitter at Tacolneston. This is to the south of The Broads and quite a long way from some places. The transmitter power there was increased when the old analogue signals were switched off and this improved reception generally, but boats are low down and often get behind trees and other obstructions which can give problems. The signal from Tacolneston is horizontally polarised so your aerial must be correctly oriented. Cross polarization greatly reduces the signal. The rule of thumb with aerials is the higher and bigger they are, the better they will work. The co-axial cable connecting the aerial to the receiver is just as important as the aerial. It should be good quality, dry, undamaged and have no joints. Connectors must be correctly fitted and preferably soldered. If water gets in then the cable is junk and you need a new one. If reception is poor or suddenly gets worse, look at the co-ax first. The connectors must be clean and free from corrosion. The outer sheath or braid is not a screen. At these frequencies, the co-ax acts as a transmission line with the signals travelling on the surface of both the inner and outer conductors. Any damage or joint can look like a short circuit to the signal. Amplifiers or boosters are no substitute for a decent aerial. They amplify noise and unwanted signals and can cause a range of problems. Passive splitters or diplexers greatly reduce the signal strength. They will at best halve it. If an aerial is advertised as being a miracle aerial then this means it will be a miracle if it works. Aerials that look like dart boards are best for playing darts. Omnidirectional aerials are often small and have no gain so they work best if mounted as high as possible. They have the huge advantage that you don't have to point them at the transmitter so they work on swinging moorings or when you are motoring along twisty rivers. Directional aerials have gain and this means that they effectively boost the transmitter power. As seen in the chart a few posts ago, a gain of 3db is the equivalent of doubling the transmitter power. This is just about enough to notice a difference. However, they work best in static situations. They are not so good when you are on the move. Many aerials have gains much more than 3db and they also reject unwanted signals and noise. There are two types of directional aerials in the shops. Yagis and Log Periodics. They look similar but are not the same and work in totally different ways. Yagis have more gain and are simpler aerials. However, their bandwidth is fairly tight so it is important to buy one made for the Tacolneston transmitter. They will give the best reception and will be cheaper. Log Periodics have less gain than Yagis for similar size aerials but they have a wider bandwidth and are suitable for travelling round the country in a caravan or similar. They usually cost a bit more and are not really necessary on the Broads. So, in summary: Mount it high, use good quality cable. Look at the aerials mounted on the houses in the area, get one the same and point it the same way. Yagis are cheap and high gain. Omnidirectional is best for moving boats but has no gain. Nigel, Ham radio station G4AXA, Ludham
  8. Jocave. You have absolutely made the right decision. Ludham is far more than a holiday destination, it is a community. There are lots of things going on here, winter and summer. It is a great place to live, full of friendly people. You don't see any of this visiting on a boat. You have to live here to be part of it. The best way to get the most out of it is to join in. Don't forget to join us in the Womack Herons (Ludham's own boating and Social Club). I lived in London for 27 years but I always had my holiday home in Ludham and now we live here permanently, I would never go back to living in London again. Ludham has Parish Moorings at very reasonable rates. They are only available to residents and there is a waiting list. Expect to be on the list for 3 to 4 years. Come and see us when you move in. Nigel in sunny Ludham
  9. Hi All Just to let you know that the Ludham Community Archive Group has finally finished the book about Ludham in the 20th Century. It has been over 10 years in the writing but now it is here It is still subject to changes and corrections, but if you would like to read it, it is available on our website now. Just go to the website and click on the button. The full book is on there and there is no charge for it. If you see anything wrong, please let us know. Once upon a time there was going to be a printed version of the book. I am not sure this is actually likely happen, but you never know. The website has also had a makeover and there is now a section on Ludham memories both written and on video. I am still adding videos slowly to this section and a new one from Dolly Grapes went on yesterday. www.ludhamarchive.org.uk I hope this is of interest. Nigel Sunny Ludham
  10. Actually, Amateur Radio Licences are issued free of charge and there are no ongoing charges either. However, to obtain any such licence you have to take an exam. This is fine but if you are tech averse it might prove a bit challenging. There are 3 levels of licence, Novice, Intermediate and Full. Each requires you to take an exam which gets harder as you move up. You can get more information from the Radio Society of Great Britain. The best way to start is as a listener. (known as a Short Wave Listener or SWL). This helps you to understand what is going on and also prepares you for taking part in the next stage. I started as an SWL when I was a teenager. I obtained my licence for G4AXA in 1972. Back then, the levels of licence were different and you had to take a City and Guilds exam in Radio and Electronics. I studied for mine at evening classes and was the only one in my class to pass. Then you had to take a morse code exam like a ship's operator. I took mine at the Liver Building in Liverpool. Morse is no longer a requirement although it is still widely used by Radio Hams. I can still do it no problem. If you want it then the exam is no problem, but you have got to want it. Actually, I think that the internet has killed off Ham Radio a bit. It used to be a big challenge to speak to someone on the other side of the World. These days it is no big deal. Nigel - Ham Radio Station G4AXA. Ludham
  11. I don't own any of these rigs, but I understand that you can turn off the ability to transmit on stored channels. However, some say you can override this by using the VFO. Following Arthur's comments, I had a look to see if there are published tests for spurious emissions. There have been quite a lot of tests carried out in the US and the results varied between examples. Some tests showed outputs on the 2nd, 3rd and 4th harmonics outside the limits allowed in the US. Others were OK. Of course, you could use them with a bandpass filter but that would probably be about as big as the rig itself. As little Ham Radio devices they have the big advantage of being cheap and they are widely used. I don't think I will be buying one. Nigel in Ludham
  12. Question 2: As Arthur says, an Amateur Radio Licence only applies to the Ham Radio Bands and does not cover anything else. Supplementary Question - How do I know? Well..... Ham Radio Licences are not just given out on the payment of a fee. You have to be able to demonstrate that you know what you are doing. This includes knowing which frequencies and modes are allowed. You are also expected to be able to determine if transmitters are operating in the correct bands. Hence Arthur's comments. Arthur - Question for you: Did you have a look at what spurious emissions these rigs are putting out? Nigel (G4AXA) in Sunny Ludham
  13. To answer the question above, an Amateur (Ham) Radio licence does not allow you to transmit on PMR channels. These Baofeng rigs are not legal for use on PMR. You have to use the low power, type approved, devices which are sold for the purpose. Anyone can do this, no licence required. Nigel (Ham radio station G4AXA)
  14. The presentation of the plaque has now taken place both for Ludham and Hoveton St John. Pictures here: http://www.ludhamarchive.org.uk/sotherton.htm Nigel
  15. Did you know that Ludham has a connection with George Washington? Not only that, but with Royalty too. Just an odd bit of history. Not often we go back to the 15th Century. Details here: http://www.ludhamarchive.org.uk/sotherton.htm Hope this is of interest. Nigel Ludham Community Archive Group
×
×
  • Create New...

Important Information

For details of our Guidelines, please take a look at the Terms of Use here.