The first step is to download the software from here. It showed me my swr was super low at 50 watts but at 25 and 5 watts it was impossible to calibrate and get a good reading. Jun, 2018 that was my thinking too, which is on the if board. For anyone using a cb or ham radio this video shows how to check swr on a am radio. Aug 07, 2008 short video on how to use a swr meter radio shack 21534 cbhighfrequency ham power swr meter. The ameritron awm35 is a flat mobile peak reading swr wattmeter that is. You should also note, i have used the term striplines. As the srf meter is not working in rx and tx, would suggest that you have a common wire broken or you have the swr cal switch in the in the swr or cal position and not in the srf position, this is easy to do, i have seen a quit a few people do this. This device is critical to making the tuning software function, because it provides the constant stream of swr data used to quickly tune the loop capacitor.
So i just said screw it and put an irf520 in and it transmits fine. To make them fully operational requires a user name and password. Dec 06, 2019 this was while the ubitx rx input was hooked to a 50 ohm dummy load. The text of this project should be read in conjunction with standing waves in the info section. I own three comercial radios of course with built in swr meters, but also have a bunch of beloved home made qrp rigs, a. This not only gives you the best range but it can also prevent damage to your radio. It allows you to tune your antenna, which is adjusting the length of the antenna for optimum performance. The swr meter or vswr voltage standing wave ratio meter measures the standing wave ratio swr in a transmission line. But the bad news is that the meter is pegged as if i am seeing swr9 into a dummy load. So i recently tested my antenna and feedline with a vna. For more information on what swr is and means, please.
Mfj 870 grandmaster swrpower meters mfj870 free shipping. Workman swr 2t meter is a great value i purchased and used the workman meter recently to tune 2 cb antennas and it worked perfectly. Has anybody gotten kd8cecs swr meter to work and can. The ability to tune nonresonant antennas way beyond the 450ds 3. On my hf rig, i have a dipole antenna, a swr meter, an antenna tuner, and my rig. Diy swr meters and swr meter information category is a curation of 37 web resources on, wideband swr meter, swr mega swr power meter, converting zetagi hp201 for ham bands. The easiest way to test for a defective meter is to take readings from a second meter and compare the results to those from the first meter. Video looking at the final circuit configuration and software for the pwrswr meter. Swr is very important to every cb setup and should be checked every time a new antenna is purchased or an antenna is moved. If i understand correctly the meter in the radio goes full scale but the swr meter doesnt move.
Software engineering is working on fw fix for proper atu functionality. The goal while working recently with the autocap software, i realized that the weak link in the system was the lp100 meter. In either case, you likely have a faulty meter that needs. I flipped over to the swr meter, thinking i lost a coax cable, and the same thing, spoke into the mic, still in ssb mode and the meter pegged to the top of. One of the most common causes of high swr readings is incorrectly connecting your swr meter to your radio and antenna. I used that same jumper to attach my 50 ohm load to the tx filter output. This was while the ubitx rx input was hooked to a 50 ohm dummy load. This would cause the swr meter to show no movement and the radio meter to go full scale. Lower wattage and the setting was highly sensitive and a recheck of power produced a pegged needle and reattempts to set the meter. For anyone using a cb or ham radio this video shows how to. Set up any of the functions of the meter which include. Software download our updated software for our vna, tdr, or swr meters.
Shop wattmeters with true peak and average readings, 202002,000watt ranges, amplifier bypass for high swr, high swr audio alarms, large 6. Ive been wanting to hook up a kicker amp a blue thunder 200 to the old radio shack trc484 cb radio in my truck. The ameritron awm35 is a flat mobile peak reading swrwattmeter that is only 1 58 inches thick. Browse our wide selection of swr, power, modulation, marine field, multi meters, and much, much more. That was my thinking too, which is on the if board. Compact crossneedle swrwattmeter compact hfvhf swrwattmeter. Use an swr meter to document and log the degree of mismatch between a transmission load, usually the radio antenna, and its line. All grandmasters feature peak and average forward and reflected power readings and. Connect the antenna normally connected to the back of the cb to the connector marked antenna or ant on your swr meter. With the 6600m atu on bypass and the amp on standby the spe and flex swr meters were closely matched on all bands, except for 10m. Testing a defective swr meter right channel radios. The icom ic7300 has a feature where it can make a barchart swr plot. Interpreting swr meter readings tuning your antenna to an acceptable swr is crucial for good performance.
Read forwardreflected power and swr simultaneously. Buy cb radio swr meters from our swr meter range at. Now my stumping occurs on the swr calibration of my very first cb radio, a uniden 520xl with a little wil antenna. Short video on how to use a swr meter radio shack 21534 cbhighfrequency ham power swr meter. Hi all, im new to all the cb stuff but have read around a bit just to get some footing. When the probe was hooked up, the meter on the nextion display would go high, and then settle down to a good swr reading. This power meter allows you to tune your ham or other amateur radio system to perform at its best. It can sometimes be confusing to get things set right but this is the case with all top level contesting software. Brackets on the instrument name indicates the instrument is no longer manufactured. Swr meters measure the effectiveness of a transmissions impedance matching performance. Mini60 bluetooth android hf ant swr antenna analyzer meter. In addition, specific models mentioned in the ham radio forum like diamond, mfj analyzersswr and power meters,comet, yaesu, icom, watson cushcraft, mfj and more are here for future reference.
In this tech tip video, rugged radios provides you a crash course in the basics of using an swr meter to test the power and performance of your 2. The auswr from accessories unlimited is our most popular swr meter. The meter indicates the degree of mismatch between a transmission line and its load usually a radio antenna. Is my palomar 500 cb radio swr meter bad, or yahoo. Now i have to spend more time ad money just to calibrate the signals. This tells me the swr bridge circuit l42, l43, r14 is still out of balance into a 50 ohm resistive load attached directly to filter board output coax connector.
Apr 15, 2015 if i understand correctly the meter in the radio goes full scale but the swr meter doesnt move. The existing raduino in the bitx does not have sufficinet spare analog input pins to provide everything that duwayne wanted to measure. Antenna analyzers check antennas for resonant frequency. The uk leading supplier and distributor of communications equipment. With the new swr meter functionality you can sweep a frequency range and the app shows you a chart with swr values. Click the desired softwares title to download all the nnnn pc vision software is fully operational and free to download. Ham radio and amateur radio online equipment sales. Listed under the softwareantenna analysis category that is about antenna. It could be that the jumper cable between the radio and the swr meter has a short.
Listed under the software antenna analysis category that is about antenna. High swr troubleshooting guide right channel radios. We carry swrwattmeters from ameritron, coaxial dynamics, comet, daiwa, diamond, mfj enterprises and palstar, including the most accurate microprocessorcontrolled units on the market. All swr meter software is licensed and these downloads are 10 minute demo copies. Cooper sezs to sent back, which i will do next month. A functional and simple front panel layout lets you select power ranges, change bands or make swr readings intuitively. Icom ic718 issue, and a fix worldwidedx radio forum. Swrpower meters test the connection between your two way radio and your antenna for proper impedance and swr. Has anybody gotten kd8cecs swr meter to work and can share how. I own three comercial radios of course with built in swr meters, but also have a bunch of beloved home made qrp rigs, a t match tuner and 40m long windom dipole. Please do not make requests for copies of radio programming software which is sold or was sold by the manufacturer for any monetary value. A cb antenna with a high swr reading will not work to its full potential and in the worst case could even damage the cb radio.
Dosy cb ham radio swr watt meter tc4001p test center. Electronics free delivery possible on eligible purchases. Logically, i want to make good and sure that my swr is as low as possible to reduce the amount of power reflected back into my radio. I can set vr2 to minimum and get full power but the rigs swr meter still pegs because the metering circuit is a separate path from the alc but they both share the same bridge circuit. No matter which frequencies i picked, all the bars in the chart were always pegged at an swr of 3. Drivers product swr meter for cb radio antennas heavy duty metal with so 239 input and output with 3 jumper coax cable black.
Here, youll find links for analyzersswr and power meters covering hfvhfuhf. Welcome to the amateur radio analyzersswr and power meters page. Addressing issues with an swr meter and the nextion display. Maybe someone viewing this can identify the piece of equipment it came from. I appreciate that the authors limit releases to prevent the software from changing too wildly. Interpreting swr meter readings right channel radios. Even though comercial rigs have builtin digital readout swr meters, having an external one is a good idea. The swr meter needs to be placed in line between the antenna and the cb. Be prepared and able to communicate in case of emergency with the largest selection at. If i tap power from the input side of the tx filter board i get the full 100200w on all bands. Call letters or other alpha numeric message 16 characters long examples above have array solutions. Though i like the big face meters, when it comes to measuring watts and swrs, the radio shack impresses me. Discussion in ham equipment started by bow, mar 17.
Mini60 bluetooth android hf ant swr antenna analyzer meter for ham radio hobbists 160 mhz. Measure forward and reflected transmitter power with topbrand swrwattmeters from dx engineering. Hf6m grandmaster swr meter mfj grandmaster swr power meters are the cadillacs of ham radio. Technicians use it to evaluate the effectiveness of impedance matching efforts.
The flex swr meter was pegged while the spe was reading 1. Or maybe the meter reads capacitive and inductive reactance as low and high. The kepc225d is the pcb number, the pll is at the front of the radio near the channel switch and will have a number like upd2816. Swr power meter for vhf uhf ham radio 120 500 mhz 150 watt workman model 104. In this video, we open up an swr meter to find out whats inside and how it works.
Swr measured with an swr meter shows you how well your coax, antenna mount, ground. A small digital qrp swr meter with oled display thin 0. The guidelines below give you a sense of what swr readings in each range mean, and how to deal with excessively large ones. Featured items newest items bestselling alphabetical. Hamcity has more than 30 years of experience in the amateur radio equipment business. Identifying a faulty swr meter a defective swr meter is rarely the cause of high swr readings, but when it is, it can wreak havoc on your troubleshooting efforts. At cbradiosplus we offer a wide variety of brands and types of communications equipment including technical upgrades all at some of the lowest prices on the internet with a money back guarantee if you are not fully satisfied with our products or service.
This is a quality product and i would recommend it to anyone needing a swr meter. Always peg to the far right when the mic is keyed, with adjustment of the cal dial failing to move it leftward. Buy swr power meter for vhf uhf ham radio 120 500 mhz 150 watt workman model 104. If you simply will not settle for less than the best accuracy and precision these mfj grandmasters are for you. The instructions that come with the meter are good. Swr standing wave ratio is a term every cber should know.
Sold by lessco sales, dosy meter tc4001p,label lettering was missing on the front panel,swr calibration meter did not work at all, meter stay pegged all the time would not calibrate on swr or calibration return product will not order from them again. And maybe even describe why a certain amount of swr is ok to call 0. Find great deals on ebay for swr meter and swr meter cb radio. Addressing issues with an swr meter and the nextion. Mfj 870 grandmaster swrpower meters are the cadillac of ham radio wattmeters. Certainly could have done something wrong in assembling the swr bridge, however, the fact that i got it balanced makes me think maybe not. A small digital qrp swr meter with oled display zl2pd.
However, as soon as he removed the probe to the oscilloscope, the meter would just stay pegged at very high swr. The only set back is it does not come with the coaxial cable jumper male end. Swr mega swr meter design just indicator, probe will be described later one possible design is here in czech new version of windows calibration software. Tried a 2sc1969 final in a cobra 29nwst and when i keyed up, it pegged the smeter until it got stuck even when i adjusted vr5. Well the good news is that there is no apparent bugs i introduced into the nextion software regarding display of swr. Astatic swrrfstrength meterpdc2 swr, rf power and field strength meter the pdc2 test instrument is a compact 3function test meter indicates the condition of any 52 ohm antenna and antenna coax used for cb radio operation tests for standing wave ratio swr, relative rf power, or field strength. Is my palomar 500 cb radio swr meter bad, or yahoo answers. Only part that would not make sense about that is the pegged swr meter indication. So239 input and output connectors with heavy duty metal case. High swr caused by an improperly tuned antenna or simple water andor corrosion intrusion will cause poor performance and eventual failure of two way radio equipment. We carry swr wattmeters from ameritron, coaxial dynamics, comet, daiwa, diamond, mfj enterprises and palstar, including the most accurate microprocessorcontrolled units on the market. The swr meters software is licensed and these downloads are 10 minute demo copies. Technically striplines have a ground plane on both sides and those here are technically microstriplnes because they only have one.
A defective swr meter is rarely the cause of high swr readings, but when it is, it can wreak havoc on your troubleshooting efforts. Please visit us today for all your ham radio needs. The standing wave ratio swr meter, or voltage standing wave ratio vswr meter, measures the swr of a transmission line. Its standing wave ratio swr function helps you trim your antenna to the precise length that produces the maximum transmit power. External power meter into same 50 ohm load shows about 50w. Before i get too crazy, i think im going to go back and look at simple things again like the coax jumper between the tx filter and the at. Simulated smeter and swr meter on small oled display duwayne kv4qb has been playing with an arduino pro mini and a small oled display to use as a stand alone replacement for a analog meter. Mfj grandmaster swrpower meters are the cadillacs of ham radio. I have a palomar 500 10100 watt swr and watt meter. Vk5ajl build your own microstripline swr meter the.