They use 50 ohm stripline from each port to the switch and the switch stray capacitance and inductance is almost zero. It reads information from the transceiver and selects the preprogrammed antenna automatically. Here, youll find links for high quality coax switch covering hfvhfuhf. Use a long length of twin flex extend the headphones of the transceiver to the capacitor box by antenna mast base 9. Figure 10 the schematic of the antenna selector control logic. K7age has a great youtube video on how to control the ameritron switch with a national control device board. Cant afford a fully automatic computer controlled rotator, but would like more capability from your basic rotator. The arsusb antenna rotator system is the easiest and highest performance universal interface for handling your antenna rotor. Alternatively, use an antenna tuner with a resistive bridge circuit, such as the norcal blt, because it provides a maximum mismatch of about 2. Incredible custom designed 12way antenna switching, rotator. Youll be able to control your antenna rotor from your computer. Oct 01, 2014 in this video i show how to interface a serial interface board with relays to my ham radio antenna switch. Because its fun and youll learn something new because youll be able to automate your home and do lots of cool things with it because its cheaper than commercial alternatives, especially if you want to own multiple ones.
These are station accessories every ham can should build, but just remember. A selection of the best diy amateur radio projects based on arduino arduino automated antenna switch, cw keyer, automatic antenna tuner, rf pwr and swr meter, aprs tracker, beacon controller, antenna switch, rotator controller, arduino as an sdr. Coax switch return loss this plot represents return loss from one transceiver port to a selected antenna port. An amazing ethernet controlled antenna farm control system with firmware and software written by james m0yom. For larger configurations, multiple switches will need to be cascaded. As i am so lucky as to have a tuned antenna for each amateur band between 80m and 6m i thought that an automatic antenna switch would be very convenient. I wonder if anyone can offer experienced advice on the best design for these bands. This page describes a smart antenna box using an rgcathode for 3 antennas. I bought a 4 position manual antenna switch and very quickly realized again that i did not want to go up and down the stairs with kids and wife sleeping to switch the antenna. Mini can be installed inside the switch to turn onoff your appliances connected with the switch. How to build a simple fm wireless remote switch bright hub.
Using 433mhz remote controlled switches on arduino. Lastly, some mail software programs which use the data interface built into the transceiver can cause compatibility issues with some controllers if theyre not set up correctly. An eight channel remote control antenna selector arrl. Software to control your beam antenna rotator, if you have one. The control box consists of a small power supply providing 12v or 24v dc to suit whatever relays you are using.
This little wifi module is everything i have been hoping for in a development board. A remote controlled wifi antenna switch eight gpios means that we can program the module so it can read and write digital signals a 0 or a 1. Antenna four to one qro switch antenna six to one switch high power attenuator. Electronics diy quality electronic kits, electronic. Together with remoterig rrc1258 it can be setup to automatically follow your band changes. You will also find a method called initantennalist and this is the place to define your antennas. I am looking for just an antenna switching software for 5 antennas. If this does not happen as expected then check your wiring and software setup etc. It has its own regulated and filtered power supply. Aug 05, 2015 i bought a 4 position manual antenna switch and very quickly realized again that i did not want to go up and down the stairs with kids and wife sleeping to switch the antenna. It measures esr values, capacitance 100pf 20,000uf, inductance 10uh 20h, resistance 0.
Mar 27, 2017 this means that antenna switch does not fully isolate other radios when they are switched out. Apart from app control, it is equipped with a wire used to connect the rocker light switch. Could be controlled also from simple web interface or manualy from front panel knob. Sonoff 4ch pro r2 wifi smart switch 4gang din rail mounting home automation,selflockinginterlock control home appliances, compatible with alexa sonoff 4ch pro r2 4. Antenna sharing system for 4 radios and 8 antenna ports. Remote control for antenna rotator iw7dmh ham radio. The above system is controlled through a mini transmitter circuit operating at around 100mhz fm waves.
Coax switch insertion loss the plot above shows the insertion loss from one of the transceiver ports to a selected antenna. I was looking at an open type relay with a rating of 30amps at 220vac grainger 5z552. Acom 2000s is a digital control unit designed to provide fully automatic antenna switching capabilities. At the shack set the receiver to the signal frequency and select cw with a fast agc setting. I built the control unit into a salvaged computer ab switchbox. Diy home automation with esp8266 linknode r4 and amazon. High performance remote controlled 5 way antenna switch. Serial control of ham radio antenna switch youtube. The front mounted switch left in the upper right photo is the amplifier control switch depicted graphically in the schematic. And there are two ways to power a remote antenna switch. The remote control antenna switch consists of two circuit boards. The rotator controller is connected to internet through a ser2net daemon that is installed on a rpi server.
Using the 4 way control switch box select the antenna element which is farthest away from the mfj signal source. Diy home automation with esp8266 linknode r4 and amazon alexa. There i mounted a remotely controlled antenna switch that can switch between the following. The mfj4726 the mfj4726 consists of two separate 6position relay controlled rf switches mounted in the same box. Wifi hf antenna switch qrzcq the database for radio hams. This article describes the design and construction of a remote wifi antenna switch for hf that is an order of magnitude more economical than any wireless remote switch available today. When the ptt switch is pressed, the rx ant led should turn red, indicating that the relay has switched out the aux antenna circuit. I need to know what software there is out their to control the remote coax switch via a rs232 serial port. Udn2580a supply 12v power driver switching antenna relay with 12v. In using the tr switch, then, it is wise to first adjust your antenna tuner for a good match at reduced power, and then raise the power to normal operating levels but still no more than 10 watts. One solution for cleaning my hamshack table and obtain as goal possible remotely operated hamshack is an automatic antenna switch.
Mfj1702 2 position antenna switch better than 60 db isolation at 300 mhz better than 50 db at 450mhz less than 0. Manual antenna controller s8 manual antenna controller s8 is an accessory in use with antenna genius, antenna switch 8x2 or splitter ps3000rx. This photo shows the left control has selected antenna 1, and the right control is connected to antenna 6. The central vero board is the band decoder and driver unit for the antenna switch. C by flashing it with the manufacturers espressif software development kit sdk. The switch has been build using several little modules. For our switch, we selected control trace widths of 15 mils for. Antenna switch 1269 high performance remote controlled 10 way antenna switch. Hamplus smart antenna control switching devices, control.
Antenna switch projects category is a curation of 31 web resources on, five antennas switch box, beverage antenna switch, remote control of mast mounted equipment. I guess everybody knows those remote controlled switches that in their simplest form come in a couple mostly 3 of switcheable devices to plug into the mains outlet and that will receive a plug of a lamp or something and that can be switched on a. I decided to build two 20 m and two 40 m antennas for my antenna farm. This new circuit was just what i wanted and i began to collect the parts, however, before. Remember that the indicator leds are controlled from the relay unit so a short delay of the corresponding led illuminating on the controller is normal.
The port is simply the index of the antenna in antennalist array. The circuit of a fm wireless remote switch presented here is very easy to build and can be used to toggle a load anywhere within a radial distance of 50 meters. Low cost legal limit remote antenna switch for 1602 meters powered through the coax cable. Nov 06, 2017 i am too lazy change often antenna cables, seek their ends in mess on my table and toggle all the weird manual antenna switches again and again. Would you like a simple to use point and shoot computer controlled antenna. A selection of 9 amazing diy arduino ham radio projects. A multicore cable is then run from the terminal strip to the.
There is only one coax cable running from the shack to near the base of the versa 18m tower. Tonne software offers the nifty meter program to create meter scales from scratch. Identify switch parameters and characteristics lets say your application is to switch between two antenna signals. The control unit is on the left, and the remotely controlled switch is on the right this design is for a remotely controlled antenna switch, for which the control signals are sent over the coaxial cable to the switch, rather than requiring an additional control cable. Or, you can run the relay control voltage up the center conductor of the coax cable. Dual feedline option with so239 uhf female connectors. At the moment they work only with the prosisteld serial protocol the only one i can test with. And more importantly, i did not want to run another set of cables to drive a wired remote controlled one. This is perfect to drive leds or relays and make them open or close according to some logic and control, either running on the module or. U2 is a 74hc238 3to8 decoder ic and u3 is a ulm2008a high current, 8 pair darlington transistor array to provide the relay drive current. Remote control,automatic antenna switch,selection switch. In addition, specific models mentioned in the ham radio forums like diamond coax switch,comet coax switch, icom, watson, mfj coax switch and more are here for future reference.
The schematic in figure 2 shows the switch configuration with antenna 1. View and download the shield schematic and pcb kicadeagle cad files. The switch assembly contains the relays and relay drive circuitry to select between position 0 to 7. Add a software defined radio sdr to your transceiver to. An antenna rotator controller a very simple controller circuit, with fairly smart performance. The normally closed side of the relay grounds the antenna when it is not. Over the last year or so i have became captivated with anything and everything esp8266 related, and rightfully so. You can use a separate control wire from your operating position. Vk2gwk home pages homebrew projects automatic antenna switch. Serial computer controlled antenna switches flexradio community. For use with a stackmatch, allows eightpak relay box with ntype connectors, for indoor use, needs a controller or controllers, see op.
Two nice software utilities you can use to control your antenna rotator from pc and android smartphone. Years ago i used a parallel port interface with relays. When used in combination with the acom 2000sw and the acom 2000a automatic hf linear amplifier, antenna selection information generated by the acom 2000a is communicated to the 2000s. This unit reads bcd band data from two transceivers and automaticaly switches antennas with colision protection and blocking power amplifier during ptt active hot switch protection. Together with remoterig rrc1258 it can be setup to automatically. Our selection of fully rfshielded dx engineering and ameritron remote switches use quality components and are weatherproofed to stand up to the elements. If it goes out and the switch is on, it means youve overdriven the amplifier. Connecting the arsusb to your pc via a usb port and later to your rotator is easy. The switch is designed specially to be used for remote over the internet controlled systems, but can of course be used in other applications also. Serial computer controlled antenna switches flexradio.
Sonoff wifi switch pack of 6 wireless remote control. Operators interested in this functionality may contact markus by email dk5ax at. Amateur radio antenna sold here,we update our stocks to keep in touch with modern inprovements in. In this video i show how to interface a serial interface board with relays to my ham radio antenna switch. In turn that means that rf from the transmitter not only goes to the antenna, but also to the other. As1289 remote controlled antenna switch preliminary. Arduino boards are available commercially in preassembled form, or as doityourself diy kits.
Years of amateur radio experience shows in these components for highperforming dx and contest stations. The switch is connected to the internet primarily via. So one nice evening i was start my own homebrew project. Controllers manual ip switch mk2 mm combine 6x2 antenna ip control multi beaming controller band decoder for arduino manual ip switch web switch 63 relay for arduino mega single rotator interface open interface iii multi rotator control. The switch can be manually controlled via an internal web interface. Port 0 is always the dummy load do not change that in order to define the band list, just create a simplelist object. Searching even further, i discovered that phil had another, later article 1606 meter remote antenna switch with control through the coax cable for the same type circuit but it was the markii model my designation, not his with some nice improvements.
Sonoff basic smart remote control wifi switch compatible with. Figure 9 the schematic of the basic selector switch operation. Fourposition hf antenna switch with pc control nuts and volts. Add a software defined radio sdr to your transceiver to make a realtime panadapter a panadapter allows you to see all of the radio stations currently transmitting across an entire band. The antenna switch is designed specially to be used for remote over the internet controlled systems, but can of course be used in other applications also. Dx engineering offers only the best remote antenna switches. It works with most icom,yaesu, kenwood and other rigs that have a band data output line. Switch positions 1 thru 8 correspond to antennas 1 thru 8. The elimination of control cables gives you a fast, neat and inexpensive installation with only one coaxial line for four antennas. The method is devided to 8 sections one for each antenna. Beverage switching box sharing beverage antennas with this switch boxes is possible. Vk2gwk home pages homebrew projects automatic antenna.
Green heron engineering green heron engineering, llc is. For use with a stackmatch, allows eightpak relay box with ntype connectors, for indoor use, needs a controller. Rx and tx antennas can even be different, a project by on7eq. Antenna switches the ameritron rcs4 is a remote controlled coax switch that selects one of four outputs by supplying all control voltages through the coax. Apr 25, 2015 a selection of 9 amazing diy arduino ham radio projects. I would like to serial computer control the antenna switch via the computer remotely. A remote controlled wifi antenna switch introduction this article describes the design and construction of a remote wifi antenna switch for hf that is an order of magnitude more economical than any wireless remote switch available today. Sonoff mini two way wifi wireless smart diy switch. Esr meter transistor tester lc meter kit is an amazing autoranging multimeter that automatically identifies and analyzes components being tested. As mentioned above, proper antenna impedance matching is a absolute prerequisite when using an swr detecting controller. The remote control needs just a simple wire and the gnd for remotecontrol hits. We carry antenna switches with robust power ratings that eliminate crosstalk and interference caused by strong signals on other ports.
This arduino project decode icom cat frequency information and switch antennas according to preset values. When working hf, this is very useful as it allows you to quickly home in on cq calls and other activity. Commercialy available things are even far of my budget or not fulfill my expectation about their functionality. The remote control antenna selector consists of a switch assembly and an optional remote controller assembly. Before we go deeply into both laws, first of all is checking the vin, v50 and vout. I much prefer to use remotecontrolled antenna switches at the far end of the. Manual control in basic mode antennas are selected by the rotary switches on the controller unit. I am too lazy change often antenna cables, seek their ends in mess on my table. Add some uhf female so239s and we have a wifi antenna switch. Mine measure vswr antenna switch is designed specially to be used for remote over the internet controlled systems, but can of course be used in other applications also. The left hand pc board is the ea4tx arswin rotor control board that hooks up with my rotor and logging program. The control unit is on the left, and the remotely controlled switch is on the right this design is for a remotely controlled antenna switch, for which the control signals are sent over. Open source arduino based cw morse code keyer with a lot of features and flexibility, often rivaling commercial keyers.
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