Four HDMI inputs (one with 4K/144Hz, one with 4K/120Hz, one with eARC).The QM8 also adds Dolby Vision IQ, which works with an ambient light sensor to automatically adjust the picture. And of course it supports both Dolby Vision and HDR10 high dynamic range (HDR) formats (these days, basically the only manufacturer that doesn't is Samsung). Like most TVs in its class today, the 6-Series uses quantum dots that help improve color compared with non-QD-equipped TVs. The QM8 has a true 120Hz refresh rate, which leads to better motion performance than 60Hz TVs. Smaller areas, or more dimming zones, mean more-precise illumination - which ultimately increases contrast, the most important ingredient in a good picture - but they're not the only factor. It allows the screen to dim and brighten different areas simultaneously. Full-array local dimming, in turn, is the best way to improve picture quality on LCD TVs. Mini-LEDs are (surprise!) smaller than standard LEDs, allowing them to be grouped into more local dimming zones. The big difference between the QM8 and cheaper LCD-based TVs is its mini-LED backlight. TCL QM8 features: Mini-LED maxes brightness and dimming Just attach a Roku streaming device and use it instead of Google TV. Ultimately TCL's choice of Google over Roku isn't a deal-breaker, in part because there's an easy and inexpensive solution if you want to use Roku's system on the QM8 anyway. I'm willing to bet that key won't wear out. There are two different menu buttons (one gear-shaped and another "hamburger"), a dedicated profile key for some reason, and no fewer than seven shortcut keys to streaming services, including the TCL channel that I had to Google just now to find out what it was. That said, it suffers from a level of button clutter that makes it more confusing than Samsung or Roku TV clickers. The remote is a long, thin wand that looks nicer than you'll see on most budget TVs, and I appreciated the backlit keys. Note that unlike the LG C3 OLED, this TV is quite heavy, as usual for an LED LCD with a complex backlight. TCL gives you two different height choices with the stand as well so you can better fit a soundbar below the screen if you'd like. The first thing I appreciate is the central pedestal stand, which I like better than the two-legs-to-either-side look. Here is a circuit that will resonate a short whip antenna for the HF Bands.The TCL QM8 isn't as sleek as a high-end Samsung, but I preferred its look and feel to that of the Hisense. This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meterĪ 10 to 80 meters band qrp antenna tuner by KC8AON, based on Steve Weber, KD1JV "ALT or Altoids L Tuner" This antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. This small tuner by KC8AON has only 2 controls and will tune almost anything from 10 to 80Ī small antenna tuner for the Yaesu FT-817Īntenna Tuner operation, correct way to tune an antenna. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (). This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. Interesting project to remotely control, using a servo control circuit, a common commercial antenna tuner by N30X Get maximum power to your antenna by learning how to hook up and use a tunner to properly "trick" your rig KC8AON mini antenna tuner that tunes almost any antenna you connect to Includes circuit diagrams pictures and test results by GW4ALG A pdf document from a QST article made available for novices and beginners by ARRLĪ small HF antenna tuner project for qrp operations. The published version of this article appeared in the February 1990 issue of QST Magazine It all depends on the type of antenna and feed line you're using.
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