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TX between 26-33MHz, 47-54MHz, 134*-174MHz and 400-480MHz. 26-33MHz RX/TX and AM RX 47-54MHz RX/TX and AM RX 108-136MHz AM RX 136*-174MHz RX/TX 320-399MHz RX 400-480MHz RX/TX 750-950MHz RX<nowiki>*</nowiki>. ''inconsistent requires further testing.''This is similar to the [[Yaesu FT-8900R]], however, this Chinese imitation is actually more capable! Although it lacks some of the refinement of the Yaesu, the Tytera model does allow you to transmit AM modulation. The Yaesu is FM transmit only. You can listen to AM with both, but the Chinese radio is the only one of the two that will allow you to transmit AM, even on [[Citizen Band]] channels. Furthermore, the Yaesu requires modification for extended coverage while the Tytera does it out of the box.This is similar to the [[Yaesu FT-8900R]]. Although it lacks some of the refinement of the Yaesu, the Tytera model does allow you to receive AM modulation. The Yaesu requires modification for extended coverage while the Tytera does it out of the box.The PA stage gets very hot during transmit. If there is a spike in voltage during transmit then the final (MosFET) will fail. Update: I've had three of these radios in the past three years. One of the radios stopped transmitting correctly as the final amplification stage went out. This was due to an intermittent short in the antenna feed-line that was not apparent, making it not as much the fault of the radio but more the operator. As stated before, protection of the finals seems inadequate. The second unit worked for a couple years then began to drift off frequency. This is likely a fault in the oscillator crystal. The third unit is functional but seldom used. Repair of the first unit is reasonable if you do the work yourself as the radio uses a common Mitsubishi mosfet which can be purchased at a reasonable cost (under $100). You will need a good solder vacuum pump. The unit with the frequency drift problem will not be repaired as the work would exceed the value of the radio. You should consider these a somewhat expensive disposable radio as you will likely not be able to find a service shop willing to work on these or most other Chinese transceivers.A: Yes, but don't do this, it is illegal. You will die.A: No. ''See section below on AM Transmit for details.''==firmware variants=====toggle single or dual receive===Later version is known as the "Plus" model which has an updated firmware that fixes known issues and user complaints.If you short-press the volume knob on the left side (side A) you will toggle between single receive and dual receive. When in single receive the B side of the radio will display the operating voltage.''Anyone else get sick of stupid Youtube videos? Are young people too stupid to read these days? All they can do is sit and watch a video on how to do things. I like to read it in writing. So I am going to write up some reading for you to read when you want to program your rig. ''''Anyone else get sick of stupid Youtube videos? I like to read it in print. So I am going to write up some reading for you to read when you want to program your rig. ''You should know that this radio programs much the same as the Yaesu FT-8900. If you get stuck looking for information, you can search under Yaesu FT-8900 to find most answers regarding programming that apply to this radio as well.You should know that this radio programs much the same as the Yaesu FT-8900. If you become frustrated while looking for information, you can search under Yaesu FT-8900 to find most answers regarding programming that apply to this radio as well.CTCSS / PL ToneThe programming menu can be activated by a short press of the MENU button. *CTCSS can be enabled for transmit, or both (tone squelch on receive) by going to MENU item #31 (Tone M). ie Tone Mode*CTCSS frequency is set by going to MENU item #30 (Tone F). ie Tone FrequencyWhen the tone mode and frequency are set after you select the frequency you want to add to memory, you can save following the procedure "SAVE TO MEMORY"REPEATER OFFSET OR SIMPLEXThis transceiver has auto repeater offset shift. It can be enabled via MENU item #2 (ARS). You can also manually set the repeater offset which can be useful for repeaters using reverse offset or simplex.To manually set the repeater offset use menu item #24 (RPT.MOD). * Select menu #24 (RPT.MOD) and set to offset shift direction (off, +, -)* Select menu #27 (SHIFT) and select frequency shiftSAVE TO MEMORY==Does the Tytera / TYT TH-9800 talk AM?==short answer: NoSome initial reports found online indicated this radio could transmit in AM (Amplitude Modulation) as well as receive AM. I have recently acquired a TH-9800 that, although receives AM when the mode is set in the menu, still transmit in FM. There are some variations of the Quad Band TYT TH-9800 being sold. There is a "Plus" model that is supposed to have updated improved firmware. Reports of the Plus model being able to transmit AM (Amplitude Modulation) have been made. I am sceptical and so are my colleagues. We have acquired three different TYT TH-9800 transceivers, one being designated "Plus" by a red sticker on the unit.We will use a spectrum analyzer and determine if any of the three units will transmit AM and report the results here.* Use spectrum analyzer to view transmit* Study circuit to see if exciter and finals are capable. Tytera does not provide a schematic diagram.<big>No Tytera TYT TH-9800 will transmit in AM. The internal circuitry to transmit with amplitude modulation does not exist within the radio.</big>An example of the false claim made by someone using the Internet moniker "Izzyandsue" can be found here: * https://forum.ih8mud.com/threads/cb-and-quad-band-all-in-1-ham-radio-is-this-true.959057/page-2Again, no model of TYT TH-9800 will transmit with amplitude modulation, although they will receive AM. If a "trucker" can hear you as Izzyandsue claims, it would be very distorted or they are using a multi-mode radio that can operate in FM.==Plus Model==Later version is known as the "Plus" model or '''Mk II Version''' which has an updated firmware that fixes known issues and user complaints.The Upgraded Plus model became available when several complaints were made about annoying bugs in the radio. An [http://forums.qrz.com/index.php?threads/tyh-th9800.471351/ online source] reports that it has a different board than the previous model. We will take pictures of both and post them here.Purported Improvements:* Loud scan beep issue resolved: active freq caused max volume beep * One VFO scanning causes receive audio on other VFO to cut in and out resolved* Squelch problems resolved: second vfo squelch would sometimes stay open required power cycleTHIS WIKI PAGE CREATED AND MAINTAINED BY [http://www.ke0etz.com Ke0etZ]THIS WIKI PAGE CREATED AND MAINTAINED BY [http://www.w0dbw.com WØDBW]