The radio workshop Welcome to my radio workshop! Here I repair and service our stations and accessories. My business is at a hobby level as I have a regular job during the day so repairs and service are only accepted to the extent of time and desire. I also choose the type of repairs I undertake depending on the availability of service manuals and spare parts and costs associated with the repair. Old cb-radios should preferably stay at the owners home when the ravages of time and screw-happy novices often put the radio in a condition that is not worth repairing. You are always welcome to contact by using the contact form at the bottom of the page. You can also contact me if you repair/modify on a slightly simpler level yourself and need support. In that case, write your phone number in the contact form and I will call you when the opportunity arises. An IC-7300 on the repair bench Tips from the coach. If you do not have full control and the right instrument park, never open the station to repair, mod or "tune" it. Never go into hidden service menu to "trim" it. Don't touch anything that works! Use well-tuned antennas, preferably antennas in resonance or close to resonance. All contacts and connections in the antenna system must be well connected and with good contact. Make sure you have no RF currents back to the shack. In case of high mismatch in the antenna system, use an external tuner instead of the radio's built-in one. For long transmit cycle digital modes, do not run at full power. Do not build the radio in such a way that the radio's fan cannot get rid of the hot air from the station. When connecting power amplifiers, modems, microphones or other non-original peripherals, ensure that all connections are correctly configured. If the radio is not working as it should, do a factory reset before you decide to send it in for repair. Instruments and aids in the workshop at the moment: *Oscilloscope *Signal generators, two channel HF and LF *Signal generator with subtone generator. *Sinad meter *Spectrum analyzer *Frequency counter *RF millivoltmeter *Modulation meter *Antenna analyzer *Network analyzer *Inductance meter *capacitance meter *Capacitor tester (ESR) *Capacitor tester (DC leakage) *Semiconductor analyzer *Output power and swr meter *Impedance bridge *RF coupler *RF injector *HF sniffer *LF mixer (2-tone mixer) *White noise generator *Dampening kits *artificial loads with different resistances and measurement output. *Digital multimeters / bench multimeter. *Measuring tweezers/SMD tester *High resistance analog multimeter *Instrument for measuring high currents *Power supply *Lab unit *Turning transformer *Microscope *Lödstationer med lödkolvar, lödpicett, varmluftlödning, infraröd lödvärmestation och avlödningskolv med _cc781905- 5cde-3194-bb3b-136bad5cf58d_ vacuum suction *Circuit board holder *Anti-static mat, Anti-static bracelet *Reference station Yaesu FT-890 Recent repairs and service carried out in the workshop. IC-706MKIIG- Rep of reference oscillator. Drake T4x and R4- Refurbishment. Drake C-line- Trimming and replacement tubes. IC-7400- Rep of display lighting. IC-7400 Front board under repair FT-890- Replacement of relay and repair of autotuner. FT450D- Rep of RF board. Magnum 1012- TX/RX frequency tuning. Magnum 1012 connected for measurement of output frequency IC-718- Opening for TX 1.6MHz - 30MHz. IC-746- Rep of display lighting. IC-7410- Rep of autotuner and SWR bridge. IC-756-Pro kapton taped for upcoming soldering jobs LDG AT-1000ProII- Replacement of comparator. IC-751- Performance check, scale lamp replacement and volume control rebuild. IC-7400- driver board rebuild. IC-7400 with rebuilt driver stage and other transistors Magnum 1012- Poor receiver sensitivity, no repair due to value of radio and cost of repair. Dentron Supertuner Plus- Function check. Anytone AT-588 - Final transistor replacement. Broken output transistor taken out of Anytone AT-588 Repair of control board for magnetic loop antenna. Repair of QRM eliminator X-phase- Replacement of protection diodes. Anytone AT-5884M- Replacement of surge protection and rope of display lighting. Repair of QRM eliminator WiMo- Replacement of mosfet transistors. QRM eliminator repair Anytone AT-5884M - Final transistor replacement. Icom PS15 - Replacement of electrolytes. Zetagi BV131 - Replacement of power cord, start-up with rotary tafo, adjustment of meter and function check. Ericsson C700 69MHz - rep of receiver. Measurement of receiver signal Ericsson C700 CTE DC9 - No output, no repair due to final stage value and repair costs. Zetagi B47 - Replacement of final transistors and switch transistor. Elecraft K3 - Rope of connection between Subin board (splitter) and sub receiver. Elecraft K3 on the repair bench IC-78 - Rep of sensor board (encoder). IC-7300 - Modification to battery holder and replacement of watch battery. FT1000MP Mark-V - Opening for TX on all frequencies. RCI 2950-DX - TX frequency adjustment. K-PO DX-5000 - Circuit board resoldering K-PO DX-5000 - This is where the manufacturer ran out of solder Texas Star DX-500 - Re-soldering components and electrolytic capacitor replacement. Retevis RT-9000D - Thermal error in TX-VCO, change of transistor. Alinco DR-138 - Power supply cord. Sommerkamp TS-2000DX - TX frequency adjustment. Kraco 2555FM - Service and tuning. Measurement in a Kraco 2555 Spitfire MarkII - Power supply rebuild, tuning and RX shell lamp replacement. Kraco 2555 - Trimming. Sommerkamp TS-780DX - Tuning Yaesu FT-767GX - Repair of s-meter, replacement of backup battery and function check of transverters. Repair of lightning damaged TS-480HX 3 diodes from a lightning-damaged RF card from TS-480HX Hercule Turbo - TX frequency adjustment. Galaxy saturn - Rep of switch and reference oscillator as well as service and tuning. IC-746- Rep of autotuner. Broken autotuner motors removed from IC-746 for repair Retevis RT-9000D - Rope of drive voltage to the receiver. Storno repeater - Sweeping of cavity filters. Yaesu FTDX-5000 - Opening for TX on all frequencies. Yaesu FL-2100Z - Tube replacement with step start, control of bias and neutralization. Repair of SWR bridge and replacement of shell lamp. FL-2100Z - Control of DC leakage in electrolytes. Raymarin RAY54 - Function check and replacement of microphone element. Antenna switch Ameritron RCS-4 - Rep of relay, cleaning and function check. Yaesu FT-897 - EEPROM replacement. FT-897 - replacement of EEPROM ProPower PS1330 - Replacement of electrolytes. Filter bank - Replacement of relays and frequency sweep. IC-7000 - Opening for TX on all frequencies. Kraco 2530 - Rep of previously poorly executed rebuild. K-PO DX-5000 - Replacement of protection diode and encoder. The tip on the left of the micro cabinet is a pin. An FT-1000MP Mark-V on the bench En IC-260E på bänken som efter lite handpåläggning fungerar bra trots tidens tand. IC-7300 - Rep av tuner på grund av ombyggnad av SWR-brygga Alinco DX-SR8 - Provkörning av PA-delen med hjälp av signalgenerator IC-9700 uppkopplad mot signalgenerator för test av mottagare FT-100D - Local-Unit urplockad och monterad i kretskorts-hållaren för reparation av VCO Send me a repair request I will get back to you as soon as I can. Your e-mail Alternative contact details Error info Send Thank you for your message!

QRolle Here are some pictures and information about the QRolle Classic that I built. QRolle Classic is a QRP station for SSB on the bands 20m and 80m. It can also be easily further developed for CW traffic. OROlle is designed by SM6DJH Olof Holmstrand. All construction information is available on the internet, so it is still possible to build your own QRolle. The page where all the information is available is http://qrolle.thulesius.se/ Visit the page and be inspired to build your own QRolle. Tillbyggnad av QROlle för att köra CW Samanfattad byggbeskrivning

Real Time Lightning Map Euroblitz SMHI radar with flash Blitzortung

SvxLink Introduktion till SvxLink SM5GXQs repeaterskola SvxLink by SM0SVX SVX Portal Att använda en repeater med SvxLink

SK4KO Mora WebSDR.org KiwiSDR at SK5SM Spy servers SK6AG - Grötö , Svenljunga , Borås Kiwi SDR - Arvika Kiwi SDR SM5VXO SM2GCT - Umeå SK3JR - Tåsjö SK2HG - Siknas Fortress - SF2SF SM4FGE - Ludvika SM2BYC - Haparanda SK5LW Kiwi SDR jorden runt

DX Summit Reverse Beacon PSK Reporter See also under the tab "Digital modes of transport"

In order for our hobby to be as pleasant as possible, it might be a good idea to adhere to some rules about how to behave on the bands. A radio amateur must be tolerant. We share frequencies with many other people, some of whom will not have the same opinion as you. We don't talk derogatorily about people. Be mindful of what you say and avoid discussing topics that may seem upsetting or offensive. Topics that should be avoided are religion and outlook, political ideology, or economic social issues etc. where opposing parties may have strong opinions which do not necessarily match your own. We completely avoid profanity, sex words and the like. Understand that everyone may not have the same skills, experience and more. Act humbly towards other people on the bands. If you or someone else gets upset, avoid acting on it, instead behave like an adult in such situations and try to calm the situation down. Stations that deliberately interfere are ignored, attention usually only makes the problem worse. L call before sending and ask if the sequence is available if you are unsure. Also listen a few khz above and below the frequency you intend to use so you don't disturb ongoing traffic near your frequency. Call correctly and exit correctly. A matörradion is mainly for technical discussions of a purely private nature or of general interest for the hobby, tests and exams and more. Approach to DX traffic I listening and listening and listening again before calling the DX station. I calling The DX station only if I can perceive the DX station properly. I don't trust the DX cluster but be sure of the DX station's callsign before I do calling The DX station. I do not disturb the DX station or anyone who calling The DX station and I never transmit on the DX station frequency vid split-QSO I waiting for the DX station to finish a contact before I calling . I always enter my entire signal. I does not call DX station continuously. After calling the DX station, I listen carefully. I calling not when the DX operator answers another call sign, not mine. I answers or calling not when the DX operator asks for a signal that is not mine. I calling not when the DX station is requesting geographic areas other than mine Are there more stations waiting to finishI my QSO with the DX station as soon as we exchange the necessary information unless the DX station expressly wants to conduct a longer QSO with me.

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.

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. Även Bengt Lundgren, SM6APQ (Silent key) är med som författare. Sidorna är hämtade från ESR med deras godkännande. Besök gärna deras hemsida som innehåller mycket matnyttigt för den teknikintresserade amatören. - 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? - Om vi har en sändare som ger 100W uteffekt och ståendevågförhållandet (SVF) är 3:1 kommer det då ut 75W i antennen? - Det finns motsägande budskap om baluner - Hur påverkas ståendevågförhållandet av PL-259-kontakten? - Jordning - Myter om balanserade/obalanserade koaxialkablar och antenner - "Tysta antenner" - Balanserad matning och feederstrålning - Horisontella dipoler över reel jord - Koaxdipoler 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 IZ0UPS Workshop (Italienska)

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