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I think you have two things going on here. 1. The connector you installed, PL-259, is not a constant impedance type like the type "N" which will contribute to the higher SWR reading. The connectors calculate out, based on some dimensions on a few I've looked at, of around 25 to 40 ohms. It also depends on what the dialectic material used happens to be as well. The length, connector, of the miss match section also matters but in this case its rather small. This results in an impedance "bump" and a cause for some reflected power. If the radio uses an SO-259 socket there isn't much you can do about that. 2. When you cut the cable length from 100 feet to 35 feet you reduced the losses in the cable. However that applies to not only the forward power but also the reflected power. The formula for calculating SWR based on the power reading is: SWR = (1 + sqrt(Pref / Pfwd)) / (1 - sqrt(Pref / Pfwd)) Where: sqrt() - square root function Pfwd - Forward power Pref - Reflected power How this works to increase the SWR reading as measured at the radio end of the cable is as follows. With lower forward losses the reflected power from any antenna mismatch will be higher because the power to the antenna has increased. Additionally the reflected power is attenuated less as well. Both work to increase the ratio (Pref / Pfwd) in the above formula. Remember you're measuring the forward power at the radio end and that hasn't changed. Thus the numerator becomes larger while the denominator smaller in the above formula. The final result is the number calculated becomes larger, the SWR. I suspect the cable length change has more to do with the increase in SWR than the connector in this case. So as others have pointed out most radios work OK with an SWR up to 2:1, at least that's what I've seen in the spec's for the ones I looked at, without issues. An SWR around 1.5:1 or so is fine. You won't gain much by trying to lower it.

The mismatch is not between the connectors. Always use type "N" connectors when possible, but if your antenna is type "N" and the radio is SO-239, then using a cable with type "N" on the antenna side, and a PL-259 on the radio side is the way to go. Try to never use adapters in any kind of permanent installation. The impedance bump is on the PL-259, not on the "N" connector, which is an impedance balanced connector. {By the way, there are 2 different types of "N" connectors out there, depending on whether you are using 50 Ohm or 75 Ohm transmission line (cable).} To clarify your previous question, "...if the radio has an SO-239, should you also get an antenna with an SO-239 so they match?" ...the answer is NO. Always use "N" connectors for UHF when available, but if SO/PL is what the device has, use it. Having different connectors on each end of the feedline is not the problem, and having a slight mismatch on one end is better than having a slight mismatch on both ends.

It means you have to set a TX pl tone on your radio or the repeater won’t listen to you. Sent from my iPhone using Tapatalk Pro

I can confirm KPG-49D version 4.02 from ham files works on windows 7 installed normal with no issues also just uninstalled and reinstalled with no issues

I scrolled down the page at the link above and the spec's given were: ------------------------------------------------------------------------------------------- Technical Specs: License Free FRS Radio 462 - 467 MHz Exceptional conditions: Approx 20 Miles range Everyday use: Approx 3.2 Miles range Rugged city use: 50 floor penetration One-piece back clip 9-level noise reduction 80 decibel speaker output 16 Memory Channels 8,000 mAh internal battery Type-C fast charging Only 1.5CM thick (as thin as an iPhoneX) Under 5oz weight 15 day standby LED dot matrix display Headphone charging interface Transmitter Output Power: 2W/0.5W Modulation: FM (F3E) Max.Frequency Deviation: ≤5KHz Sparious Radiation: ≤7.5μW Receiver Sensitivity: 0.16μV(12dB SINAD) Audio Power: ≥300mW Audio Distortion: 80 decibel speaker output Receiving Current: <300mA Standby Current: <200mA Emission Current: <1800mA Audio Distortion: <5% Intermodulation: >60dB Max Frequency Deviation: <5KHz Supply Power: DC3.7V CTCSS/DCS: The transceiver has 50 CTCSS and 208 DCS, also non-standard subaudio can be programmed ---------------------------------------------------------------------------------------------------------------------------------------------------- To me it just looks like a cheap DSP based "radio on a chip" type hand-held. This is common in the "Baofeng" type Chinese radios. They use the RDA1846, or a derivative of it. You can get the datasheet and programming guide for the chip here: https://github.com/phishman/RDA1846/tree/master/Datasheets I would like to see the FCC ID, which it should have to be sold in the US. From the FCC web site can you see what parts the radio has certification for by looking at the grant.