My antennae Here are the antennas I use at the moment. See also under the remotestation tab. At the bottom of the page there are also some tips and links for those of you who like to build your own antennas. The beam is a Hygain Explorer and it has the bands 30m, 20m, 15m and 10m. Above it a warcbands dipole and at the top a vertical from Diamond for 2m and 70cm. It's all mounted on a sled so I can lower the antennas to the top for easier servicing. Here is the rotor that I turn the antennas with. It sits on the floor in the attic and I built it from a Permobil engine, two gearboxes and chain drive. The rotor is operated with a control box from CDE. I use this antenna for the 40m and 80m bands. The upper part for 80m is slightly shortened and thus adapted for the attachment points I have access to but performance and bandwidth is basically equivalent to a full length dipole. The coils inductance is 30 Mikrohenry, read more about the coils further down the page. Antenna analysis 80m Antenna analysis 40m Here is a picture of my 80m vertical that I have mounted on my boathouse. The antenna has a coil in the middle and uses the tin roof of the boat house as a ground plane. If you don't have access to the metal roof or the like, it works just as well with counterweight ropes. Antennas for smaller gardens Shortened antenna for the 80m band that works well. This antenna is much shorter and thus narrower, but works to tune with the radio's internal tuner over the entire band with good results. The coils are of the same construction as on my wire antenna for 80m and 40m further up the side. They are wound on 50 mm electrician's pipe. By wrapping with RK el. FK1.5mm2 automatically gets a "pitch" of 1:2. 45 turns gives the desired 30uH. A 140 mm pipe length is used for the winding itself, but a 160 mm pipe is used to accommodate the reliefs. The antenna is previously posted by SM4FPD, thanks Roy for a good antenna for small spaces. Really good Windom antenna for all bands from 40m to 10m including the Warc bands. Works very well and goes on all bands including the warc bands without too high SWR. Can be tuned with good results on 6m but works poorly on 80m. Avoid running the coax parallel to the antenna wires and preferably use a - RF-choke or similar to prevent RF to the shack, which can be a problem with Windom antennas. I myself have some tube ferrites on the coax just below the balun and have never noticed any RF in the shack. I bought this antenna but it is easy to build yourself. The antenna is designed and sold by Nigel Booth - M0CVO This is another good multiband antenna with small dimensions that also works well even on 80m. Click on the PDF button for a more detailed presentation of the antenna Step fed Baluns and chokes Here, 2 baluns are suitable for several of the antennas on the side. They are wound on the toroid core Amidon FT 240-43 which is easy to find for purchase._cc781905-5cde-3194-bb3b-136bad5cf5 50d_Maxw power ca. If you need higher power endurance, you stack two cores, maximum power 1000w. If you want to read more about baluns and how you make them, visit Wolfgang Wippermann's (SK) website. He was a guru on baluns and on the website he shares the knowledge of building well-functioning baluns. https://www.wolfgang-wippermann.de/ Här på VK6YSF hemsida hittar du också bra beskrivningar hur du bygger baluner. https://vk6ysf.com/balun_choke_balun_low_vhf.htm You can build an RF choke by wrapping the coax around a plastic tube, a so-called "uggly balun". The coax wound around a toroid core provides a wider bandwidth RF-Choke. You can see the number of turns and frame/toroid here. Antennmyter inom amatörradion Bertil Lindqvist, SM6ENG, har funderat mycket över myterna inom amatörradiovärlden. Här har han sammanställt och kommenterat ett antal av de myter och missförstånd han tycker är vanligast förekommande. I några fall medverkar Bengt Lundgren, SM6APQ som författare. Sidorna är hämtade från ESR med deras godkännande. Besök gärna deras hemsida som innehåller mycket matnyttigt för den teknikintresserade amatören. Under konstruktion - Måste en antenn vara i resonans för att fungera? - Tar en antennanpassningsenhet bort ståendevåg på koaxialkabeln? - Missförstånd om kabelns karateristiska impedans - Ger en koaxialkabel med hög förlust upphov till ståendevåg? - Fungerar en öppen feeder som en antenn? - En lågt sittande dipol har ingen riktverkan - Är G5RV en multibandantenn? - Förlorar man lika mycket i sändning som i mottagning om verkningsgraden i en antenn är dålig? - Ger högt ståendevågförhållande RF-Problem (EMI) för närliggande utrustningar? Links Here are some useful links for those of you building antennas 66pacific K7MEM M0UKD 1728.0rg Lots of wire antennas Antenna simulation program DK7ZB:s hemsida med massor av antennritningar

Emergency contact What is emergency contact? Emergency contact is an alternative method of communication that can be used when a socially critical method of communication no longer works and thus exposes the public to danger. Download SSA's translation of the IARU Emergency Contact Guide FRO is an important player when it comes to emergency communications, visit their website here. Öland's Radioamatörer has a very interesting project about emergency communications, which you can read about here. Under construction

69 MHz Channel 1 - 69.0125 Channel 2 - 69.0375 Channel 3 - 69.0625 Channel 4 - 69.0875 Channel 5 - 69.1125 Channel 6 - 69.1375 Channel 7 - 69.1625 Channel 8 - 69.1875 Maximum power: 25 W erp Transmission cycle: <10% Channel width: 25 KHz. 69.60625 69.61875 69.63125 69.64375 69.65625 69.66875 69.68125 69.69375 69.70625 69.71875 Maximum power: 5 W erp Transmission cycle: <10% Channel width: 12.5 KHz. Slim Jim antenna for 69mhz, cheap and easy to manufacture 27MHz Channel : 1 26.965 Channel : 2 26.975 Channel : 3 26.985 Channel : 3A 26.995 Channel : 4 27.005 Channel : 5 27.015 Channel : 6 27.025 Channel : 7 27.035 Channel : 7A 27.045 Channel : 8 27.055 Channel : 9 27.065 Channel : 10 27.075 Channel : 11 27.085 Channel : 11A 27.095 Channel : 12 27.105 Channel : 13 27.115 Channel : 14 27.125 Channel : 15 27.135 Channel : 15A 27.145 Channel : 16 27.155 Channel : 17 27.165 Channel : 18 27.175 Channel : 19 27.185 Channel : 19A 27.195 Channel : 20 27.205 Channel : 21 27.215 Channel : 22 27.225 Channel : 23 27.255 Channel : 24 27.235 Channel : 25 27.245 Channel : 26 27.265 Channel : 27 27.275 Channel : 28 27.285 Channel : 29 27.295 Channel : 30 27.305 Channel : 31 27.315 Channel : 32 27.325 Channel : 33 27.335 Channel : 34 27.345 Channel : 35 27.355 Channel : 36 27.365 Channel : 37 27.375 Channel : 38 27.385 Channel : 39 27.395 Channel : 40 27.405 Maximum power: 4W AM FM 12W SSB Dipole antenna for 27MHz, cheap and easy to manufacture J-pole antenna for 27MHz, an antenna with little gain that is also cheap and easy to manufacture. Siro Gainmaster for 27MHz, a 5/8 antenna with some gain that is also cheap and easy to make. Elevation map Here you can click on your QTH and see your height above sea level

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Disorders Many of us experience disturbances and high noise levels, especially if you are in a densely built-up area. I've had the same problem and here I thought I'd share some of my experiences how to fix the problem. I start by dividing the disorders into 3 categories, but it can also be a combination of these. Category 1 are disturbances that come from one's own household, which are the easiest to deal with. To make sure that the interference is coming from your own home, start by turning off all incoming power to your own home and running the radio on battery. Turn off the main switch, remove or switch off all fuses and also remove incoming main fuses to try to stop any interference coming in via the mains. If the interference is gone after that, start by screwing in the main fuses, turning on the main switch and then screwing in or turning on one fuse at a time until the interference returns. This way, you can see from which group the interference is coming from. Search the relevant group by disconnecting one consumer at a time until you find the source of the interference. If it is difficult to eliminate the source of interference, changing the phase of the drive of the station can help. The power supply can also be the cause of the disturbance. Category 2 are disturbances that come in via the power grid. This is usually noticed by the level of interference increasing when you screw in the main fuses and turn on the main switch, even though all consumers in the home are disconnected and the radio is running on battery power. By taking a radio out connected to a simpler loop antenna, you can usually follow the disturbance by listening to the disturbance following the incoming cable. Get a map showing where the cable is laid in the ground if it is not overhead and follow it with the radio to see if the interference is coming from the cable. If this is the case, contact your network provider who will help find the source of the interference. If it is difficult to eliminate the source of interference, changing the phase of the drive of the station can also help here. Category 3 are airborne disturbances from the neighborhood. They are often quite local and to find them you take a radio out and look for the disturbance in the immediate area. You can often see where it is strongest by moving in different directions in the neighborhood and that way call in from which property or area the disturbance is coming from. It is best to talk to the owner of the property where the disturbance seems to be coming from and together do a fault finding according to category 1 with the property owner. You can also use the help of the Swedish Electrical Safety Authority to search for the disturbance. If you find what is causing the disturbance, offer the owner of the source of the disturbance to replace it. If it is something that is expensive or complicated to replace, the Swedish Electrical Safety Authority usually gets the manufacturer of the interference source to fix the fault. Often, the disturbances outside one's own household are a combination of Category 2 and 3, but the network provider and the Swedish Electricity Authority usually help free of charge. If the interference is reasonably strong, it can often work to look for the interference outdoors with a normal transistor radio tuned to the AM band. What is the acceptable noise level in a densely built-up area? The disturbances usually vary with frequency and are mostly worse on the low bands. If you have a noise level between S5 and S7 on 160m and 80m, you should be satisfied if you live in a built-up area. If the noise level is closer to S9 or above, there is reason to start looking for sources of interference. Many of the disturbances in densely built-up areas usually become weaker at higher frequencies and on 10m an acceptable level is S2 - S3. It is of course easier to deal with the disturbances if you live in residential areas. If you live in an apartment building area, it can be very difficult to find the right one and then the only solution might be to run the station remotely if you have that option. There is also an aid in the form of aQRM eliminator who help many. It is based on having another, simpler antenna that receives the interference. The eleminator then reverses the phase of the interference and thus phases it out, which can be very effective in certain types of interference. On the link below you can see a video when I functionally test a QRM eliminator that I had for repair. Test of QRM eliminator There are also amateurs who have solved the problem by various modifications to the antenna system. Unfortunately, I have not succeeded in reducing the interference to an acceptable level. Tips regarding interference mitigation measures in the antenna system are gratefully received and published here. Here you can read more about how to deal with disturbances. The document was produced by SM7EQL Bengt Falkenberg - the Association of Swedish Radio Amateurs. Click on the PDF button to view the document. More information is also available on ESR's website, click on this link to get there:https://www.esr.se/index.php/emc-och-stoerningar Also visitham.se and look under the disturbances tab where there are many threads on the subject. In conclusion, a description of the cause and effect of disturbances, published by SKEF-News and written by Per Samuelsson, Swedish Electrical Safety Authority. Good luck dealing with your disorders and feel free to give feedback if you find other ways to get rid of your disorders. When electronics interfere with radio traffic The development of power electronics and digitization means that more and more products are at risk of producing unacceptable interference. Power electronics are being developed to become more energy efficient, therefore faster switching frequencies are used which require more advanced and more expensive filters to not emit electromagnetic interference. Because the costs of effective filters are high, it is not always a priority. The disturbances spread partly via wires and partly through the air to other devices that are affected. It is often difficult to understand what causes disturbances, how they manifest and what is affected. Legislation and standardization are slow processes that do not always keep up with the rapid technological development. This means that manufacturers have to take a big responsibility to carry out comprehensive risk assessments. If the protection requirement is not addressed in the legislation of harmonized product standards, manufacturers must find other ways to demonstrate that the requirements are met. This may mean that manufacturers need to turn to a notified body for help with the assessment, selection of standards or finding alternative test methods. In the case of large installations such as solar cells, fan controls and speed-controlled motor drives, special consideration must also be given to the design of the installation, how cables are laid and the use of correct interference protection. Installation must follow the manufacturer's instructions to meet the requirements. When it comes to installations with high effects, which are also mounted on roofs, the problems can be very large and spread over large distances. There are examples of severely affected radio communications or disrupted flight navigation systems. This type of problem is often very difficult to solve afterwards and can lead to high costs. But it is not only large installations that cause disturbances. We see that smaller and cheaper electrical products cause a lot of disturbances, usually they are power supplies, battery chargers and light sources with LED technology. The disturbances are spread via wires when filter components age, it can be electrolytic capacitors in mains filters that dry out or other components that lose specified tolerances. This can cause a lot of problems. Inexpensive consumer products may also have no filters at all or may not even be designed to meet the requirements set in the EU. The problems with smaller products, on the other hand, are usually local, the disturbances affect other electrical products nearby and rarely spread beyond neighboring properties. However, they can be very difficult to understand and locate. Is it your old TV that is breaking down or is it the neighbor's electric bike charger that is disturbing it? The Swedish Electrical Safety Authority has recently received an increase in resources to develop work with EMC, electromagnetic compatibility, and is building a more efficient organization around these issues. Disruption problems are often complex and we depend on notifications about the problems to be able to carry out effective supervision. The investigations are complex and take time, therefore it is important that we have a good organization and good cooperation with other authorities, companies and users. Per Samuelsson, Electricity Safety Board

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Under construction Dalslandsringen 3,765 Saturday - Sunday 09.30 The Huddinge Ring 3,762 Fridays 8 p.m The West Coast Ring 3,717 09.00 Dalaringen 3,658 08.30 The Oresund Ring 3,636 11 a.m. and 3 p.m The nomination 3,623 07.30 The Ring of Öland 3,623 Monday - Friday 09.00 Höglandringen 3,613.5 08.30 Kulturringen The Radio Museum 3,620 09.00 If you know of any changes or a ring that can be added here, let us know under the "contact" tab

Here you can read a little about me and my stations. The name is Anders Karlsson and I got my signal SM6POP in the mid-80s. My QTH is Åmål in beautiful Dalsland whose harbor is the subject of my QSL card. Welcome to my shack, the stations I currently use are: Shortwave - 50MHz, SSB and CW, Icom IC-7300. Shortwave - 50MHz, digital traffic modes, Icom IC-7400 + Signalink 2m -70cm, FM, SSB and CW, Yaesu FT-897 69MHz, Anytone AT-588 Spare station Icom IC-746 Shortwave - 50MHz - 2m and 70cm in the car, Icom IC-706MKII-G Remote station Icom IC-706MKII-G and Remoterig Amplifiers: ES Radiotel HLA 300 Plus HP500, 500w short wave Huttinger 139844, 1.1KW short wave Dentron Clipperton L, 1KW short wave Tokyo HiPower HL-180V, 180w VHF Vintage: Drake R4 and T4X from 1965 was my first HF station which I bought at SRS in 1986. After gathering dust since the mid 90s it is now newly refurbished and ready to go again. A C-line is also newly renovated and has been given its place in the shack. Shortwave, 2m and 69MHz in the boat house, Yaesu FT-450, TYT TH-9000 and Ericsson C-702 My antennas can you read more about under the Antennas and Remote station.

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Welcome to look into my toolbox! ​ Here is some tools between antenna and earth that I have used, maybe you also find something useful in the field of amateur radio on the page ​ If you click on the The radio workshop you can see a little about my ham radio repairs. I accept ham radio equipment for repair and service as time allows and access to parts and service manuals. If there is something in the toolbox you want to comment on or are missing, please contact me under Contact. ​ The page is best viewed in Windows. Last Updated - 69MHz/27MHz- 2022-10-20 ​ The page is auto-translated to English and all errors have not been corrected yet