The left hand pc board is the ea4tx arswin rotor control board that hooks up with my rotor and logging program. It measures esr values, capacitance 100pf 20,000uf, inductance 10uh 20h, resistance 0. In turn that means that rf from the transmitter not only goes to the antenna, but also to the other. 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. The switch is connected to the internet primarily via. It reads information from the transceiver and selects the preprogrammed antenna automatically. Sonoff wifi switch pack of 6 wireless remote control. For use with a stackmatch, allows eightpak relay box with ntype connectors, for indoor use, needs a controller. Diy home automation with esp8266 linknode r4 and amazon. 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. As1289 remote controlled antenna switch preliminary. The above system is controlled through a mini transmitter circuit operating at around 100mhz fm waves. 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.
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 remote control antenna switch consists of two circuit boards. Sonoff basic smart remote control wifi switch compatible with. 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. There i mounted a remotely controlled antenna switch that can switch between the following. Coax switch insertion loss the plot above shows the insertion loss from one of the transceiver ports to a selected antenna. 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.
We carry antenna switches with robust power ratings that eliminate crosstalk and interference caused by strong signals on other ports. 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. 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. Apart from app control, it is equipped with a wire used to connect the rocker light switch. If this does not happen as expected then check your wiring and software setup etc. 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. Would you like a simple to use point and shoot computer controlled antenna. Serial control of ham radio antenna switch youtube. Software to control your beam antenna rotator, if you have one. K7age has a great youtube video on how to control the ameritron switch with a national control device board. The normally closed side of the relay grounds the antenna when it is not.
Vk2gwk home pages homebrew projects automatic antenna. One solution for cleaning my hamshack table and obtain as goal possible remotely operated hamshack is an automatic antenna switch. Figure 10 the schematic of the antenna selector control logic. They use 50 ohm stripline from each port to the switch and the switch stray capacitance and inductance is almost zero. This page describes a smart antenna box using an rgcathode for 3 antennas. Using the 4 way control switch box select the antenna element which is farthest away from the mfj signal source. Or, you can run the relay control voltage up the center conductor of the coax cable. I need to know what software there is out their to control the remote coax switch via a rs232 serial port. 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. Remote control for antenna rotator iw7dmh ham radio. Dual feedline option with so239 uhf female connectors.
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. The remote control needs just a simple wire and the gnd for remotecontrol hits. For larger configurations, multiple switches will need to be cascaded. These are station accessories every ham can should build, but just remember. The arsusb antenna rotator system is the easiest and highest performance universal interface for handling your antenna rotor. 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. Antenna switch 1269 high performance remote controlled 10 way antenna switch. The mfj4726 the mfj4726 consists of two separate 6position relay controlled rf switches mounted in the same box. You will also find a method called initantennalist and this is the place to define your antennas. The switch has been build using several little modules.
Sonoff mini two way wifi wireless smart diy switch. Remote control,automatic antenna switch,selection switch. Green heron engineering green heron engineering, llc is. And there are two ways to power a remote antenna switch. This photo shows the left control has selected antenna 1, and the right control is connected to antenna 6. The control box consists of a small power supply providing 12v or 24v dc to suit whatever relays you are using. An antenna rotator controller a very simple controller circuit, with fairly smart performance. I am looking for just an antenna switching software for 5 antennas. This new circuit was just what i wanted and i began to collect the parts, however, before. A selection of 9 amazing diy arduino ham radio projects.
Commercialy available things are even far of my budget or not fulfill my expectation about their functionality. Manual control in basic mode antennas are selected by the rotary switches on the controller unit. This arduino project decode icom cat frequency information and switch antennas according to preset values. Diy home automation with esp8266 linknode r4 and amazon alexa. Acom 2000s is a digital control unit designed to provide fully automatic antenna switching capabilities. 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. 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. The switch assembly contains the relays and relay drive circuitry to select between position 0 to 7. Using 433mhz remote controlled switches on arduino.
Switch positions 1 thru 8 correspond to antennas 1 thru 8. I am too lazy change often antenna cables, seek their ends in mess on my table. 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. I was looking at an open type relay with a rating of 30amps at 220vac grainger 5z552. I decided to build two 20 m and two 40 m antennas for my antenna farm. Together with remoterig rrc1258 it can be setup to automatically follow your band changes. Incredible custom designed 12way antenna switching, rotator. The method is devided to 8 sections one for each antenna. 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. Electronics diy quality electronic kits, electronic. Dx engineering offers only the best remote antenna switches. Youll be able to control your antenna rotor from your computer. Manual antenna controller s8 manual antenna controller s8 is an accessory in use with antenna genius, antenna switch 8x2 or splitter ps3000rx. Serial computer controlled antenna switches flexradio community.
Arduino boards are available commercially in preassembled form, or as doityourself diy kits. It works with most icom,yaesu, kenwood and other rigs that have a band data output line. The switch can be manually controlled via an internal web interface. Esr meter transistor tester lc meter kit is an amazing autoranging multimeter that automatically identifies and analyzes components being tested. Low cost legal limit remote antenna switch for 1602 meters powered through the coax cable. Antenna sharing system for 4 radios and 8 antenna ports. 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. High performance remote controlled 5 way antenna switch. Our selection of fully rfshielded dx engineering and ameritron remote switches use quality components and are weatherproofed to stand up to the elements. The central vero board is the band decoder and driver unit for the antenna switch. 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. Here, youll find links for high quality coax switch covering hfvhfuhf.
Rx and tx antennas can even be different, a project by on7eq. For use with a stackmatch, allows eightpak relay box with ntype connectors, for indoor use, needs a controller or controllers, see op. The elimination of control cables gives you a fast, neat and inexpensive installation with only one coaxial line for four antennas. Before we go deeply into both laws, first of all is checking the vin, v50 and vout. Add some uhf female so239s and we have a wifi antenna switch. It has its own regulated and filtered power supply. Years of amateur radio experience shows in these components for highperforming dx and contest stations. 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. 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. This little wifi module is everything i have been hoping for in a development board. At the shack set the receiver to the signal frequency and select cw with a fast agc setting. For our switch, we selected control trace widths of 15 mils for.
I wonder if anyone can offer experienced advice on the best design for these bands. 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. Apr 25, 2015 a selection of 9 amazing diy arduino ham radio projects. Open source arduino based cw morse code keyer with a lot of features and flexibility, often rivaling commercial keyers. Could be controlled also from simple web interface or manualy from front panel knob. There is only one coax cable running from the shack to near the base of the versa 18m tower. Vk2gwk home pages homebrew projects automatic antenna switch. When the ptt switch is pressed, the rx ant led should turn red, indicating that the relay has switched out the aux antenna circuit.
Cant afford a fully automatic computer controlled rotator, but would like more capability from your basic rotator. Fourposition hf antenna switch with pc control nuts and volts. I would like to serial computer control the antenna switch via the computer remotely. 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. Operators interested in this functionality may contact markus by email dk5ax at. Oct 01, 2014 in this video i show how to interface a serial interface board with relays to my ham radio antenna switch. Hamplus smart antenna control switching devices, control.
If it goes out and the switch is on, it means youve overdriven the amplifier. 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. I much prefer to use remotecontrolled antenna switches at the far end of the. An amazing ethernet controlled antenna farm control system with firmware and software written by james m0yom. Figure 9 the schematic of the basic selector switch operation. In this video i show how to interface a serial interface board with relays to my ham radio antenna switch. Two nice software utilities you can use to control your antenna rotator from pc and android smartphone. How to build a simple fm wireless remote switch bright hub. Add a software defined radio sdr to your transceiver to. Mar 27, 2017 this means that antenna switch does not fully isolate other radios when they are switched out. The remote control antenna selector consists of a switch assembly and an optional remote controller assembly.
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. Beverage switching box sharing beverage antennas with this switch boxes is possible. 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. 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.
So one nice evening i was start my own homebrew project. Over the last year or so i have became captivated with anything and everything esp8266 related, and rightfully so. Together with remoterig rrc1258 it can be setup to automatically. 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. Antenna four to one qro switch antenna six to one switch high power attenuator. I built the control unit into a salvaged computer ab switchbox. C by flashing it with the manufacturers espressif software development kit sdk. Coax switch return loss this plot represents return loss from one transceiver port to a selected antenna port. Alternatively, use an antenna tuner with a resistive bridge circuit, such as the norcal blt, because it provides a maximum mismatch of about 2. Mfj1702 2 position antenna switch better than 60 db isolation at 300 mhz better than 50 db at 450mhz less than 0.
As mentioned above, proper antenna impedance matching is a absolute prerequisite when using an swr detecting controller. At the moment they work only with the prosisteld serial protocol the only one i can test with. 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. 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. Serial computer controlled antenna switches flexradio. Port 0 is always the dummy load do not change that in order to define the band list, just create a simplelist object. Udn2580a supply 12v power driver switching antenna relay with 12v. And more importantly, i did not want to run another set of cables to drive a wired remote controlled one.
A multicore cable is then run from the terminal strip to the. Connecting the arsusb to your pc via a usb port and later to your rotator is easy. 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. View and download the shield schematic and pcb kicadeagle cad files. An eight channel remote control antenna selector arrl. The port is simply the index of the antenna in antennalist array. The schematic in figure 2 shows the switch configuration with antenna 1. You can use a separate control wire from your operating position. 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.