Review on 📡 Enhanced Midland 6 dB Gain Antenna: Sturdy Spring Base, NMO Connection - Compatible with MicroMobile MXT105, MXT115, MXT275, MXT400 by Johnny Nguyen

This antenna was supplied by Revain so I don't know if this antenna was returned by another customer who may have cut the antenna too short and then sent it back. If so, it looks like he wasn't circumcised. The case could mean that Midland is making these antennas from a third-party manufacturer. If this is the case, Midland will need to carry out an in-depth inspection of their antennas to determine if the antennas meet specifications. I've attached a graph of Frequency vs Voltage to Standing Wave Ratio (VSWR) from my Rig Expert AA-1400 analyzer indicating that the VSWR is unacceptable. for most GMRS frequencies. A SWR of 1.5:1 is considered the maximum acceptable to provide the best radiated transmit power. In most cases, it is desirable for the SWR to be equal to or less than 1.2:1. Over the years I have tuned many UHF antennas from other manufacturers to 1.2:1 SWR. This test was performed by connecting the antenna to a Larsen brand magnetic NMO mount that was located in the center of the roof of my car. The coax cable was routed through the rear passenger door window seal (the doors are frameless so the cable is not pinched by the window/seal interface - the seal is a wide, flexible rubber gasket with nearly an inch of surface contact). Measurements were taken with the car about 40 feet from the garage, away from vehicles, buildings etc., so the antenna pattern should be considered far field conditions - no contribution to VSWR due to reflections. от окружающей среды.На машине были закрыты все двери и окна, поэтому не должно быть аномальных вкладов в наземную конфигурацию автомобиля.Кроме того, чтобы доказать отсутствие проблем с магнитным креплением, я снял антенну Midland с магнитное крепление и установил УВЧ-антенну Ларсена, которую я настроил для радиолюбительских диапазонов УВЧ, и проверил эту антенну, чтобы убедиться, что эта антенна обеспечивает низкий КСВ на радиолюбительском диапазоне, на который она была настроена около 10 лет назад — она показала низкий КСВ для группы, как это было, когда я настраивал ее many years ago. So the mount, vehicle installation and antenna analyzer appear to be working properly and the problem is in fact with the antenna itself. In the case of the Midland antenna the lowest SWR tends to show a minimum somewhere outside of GMRS. range, say, in the 470-480 MHz range. I emailed all of this information directly to Midland Technical Support a few weeks ago and have had no response. If you buy one of these antennas, check the SWR of the antenna. as installed in your car before you start transmitting to make sure you don't mishandle the radio and also make sure you get the maximum broadcast signal through the antenna. This gives your rig maximum range in situations where communication is critical. UPDATE August 23rd, 2021 I just analyzed a second sample of this antenna for a friend with exactly the same result! The SWR frequency curve was almost identical. Midland, YOU HAVE A PROBLEM!