Infinity 1000H

Name: Infinity 1000H
Brand: Infinity

A microprocessor-driven helicopter transmitter whose custom software promised a degree of control its contemporaries couldn't match. The surviving manual is the only thing left to tell the story.

Overview

At the center of the 1000H sits a microprocessor running a custom software program. The manual calls that program the heart of the transmitter. It says the program was developed to give the pilot a much greater degree of control over its function than had previously been possible. That's a big claim, and the documentation is too thin to check it. No production years, no original price, no channel count, no frequency or modulation specification, and no RF power output survive in the available record. What remains is the manual, and it describes a radio built around menus and software rather than mechanical trim levers and DIP switches alone.

That software shapes nearly every function the manual documents. Default switch assignments govern flight modes, dual rates, gyro sensitivity, throttle hold, and an auxiliary channel. Any setup initialization reverts those assignments to the factory settings, which tells the owner this radio keeps its behavior in memory, not in wiring. Four auxiliary controls are mapped by default: a slide for low pitch trim, a second slide for high pitch trim and a second auxiliary channel, a knob for hovering pitch, and a second knob for hovering throttle. The manual points out that any or all of these assignments can be changed.

Key Features

Microprocessor Running Custom Software

The 1000H's defining characteristic, as far as the surviving documentation goes, is that a microprocessor running custom software governs its functions, not fixed analog circuitry. The manual frames this as the transmitter's advantage: a program written specifically to give the pilot more control over the system's behavior than earlier designs allowed. In practice the 1000H's capabilities are menu-driven and programmable. Flight modes, switch assignments, and mixing are configured through the transmitter's interface rather than soldered or hard-wired in. The exact scope of that programmability isn't documented with confidence. The manual available through ManualsLib is heavily OCR-corrupted, with fragments like "conir018" standing in for what should read "controls," and facts drawn from that source carry low confidence.

Mixing

The 1000H provides a broad variety of mixing functions, adjusted and programmed within a dedicated MIXING menu. Pressing the MIXING button displays a list of all active mixers. A mixer generally has to be enabled before it appears there for adjustment, and the manual points the reader to the HELI CONFIG section and its MIX INH item for activating and disabling them. Among the available mixers are three fully programmable bidirectional circuits, designated BMIX 1 through BMIX 3. These differ from compensation mixers in that there is no master or slave channel. Each channel specified in a bidirectional mixer can affect the other, so every channel carries the properties of both master and slave. Like the compensation mixers, they must be switched on at the MIX INH menu before they show up in the MIXING menu.

Synthesizer

The synthesizer menu manages the output of the 1000H transmitter. The manual lists modulation type selection, frequency selection, and scanning functions among what's available there. The menu itself implies the radio is synthesizer-based rather than crystal-controlled, though no frequency range or channel count is documented in the surviving material.

Main Menu and System Information

The main menu screen provides access to all the features of the 1000H as well as what the manual calls vital system information. Alongside the TIMER, TACH, CONT, and EDIT/SAVE buttons, the display shows the number or name of the current setup, the accumulated time, and the voltage of the transmitter and receiver batteries. The receiver voltage appears when the transmitter and receiver are connected via the DSC cord. The accumulated time is the total on-time of the system, and unplugging the battery pack from the transmitter resets it. The manual notes that resetting the accumulated timer does not erase any stored data.

Trim Offsets and Flight Modes

Different flight modes may need different trim settings. The manual's example is that trim values producing optimum hovering may be inappropriate for forward flight and aerobatics, so the 1000H lets the owner enter separate offset values for each trim in each mode. Pressing the TR OFFSET, L&R CYC OFFSET, or FA CYC OFFSET buttons brings up a "HOLD THROTTLE?" prompt. Answering YES locks the throttle at idle during adjustment, while NO allows normal throttle operation. Offsets are set with the INC+ and DEC- buttons, and the manual says plainly that in-flight testing will be necessary to determine the exact values needed. Two automated alternatives to manual adjustment exist as well, AUTO DTM and AUTO OFFSET, with the latter covered in a later section of the manual.

Switches and Inverted Flight

Flight-mode-specific options are grouped under a SWITCHES menu item and may be configured differently for each mode. Among them is SET INVERT. When it's switched on, it designates a particular flight mode for switched inverted flight. Engaging that mode reverses the action of the fore-aft cyclic, collective pitch, and tail rotor servos so inverted flight has the same feel as upright. The manual carries a blunt warning that accidentally engaging an invert flight mode at the wrong moment could cause loss of control. The same menu holds HI IDLE TRIM, which increases throttle trim authority for a given flight mode. Neither SET INVERT nor HI IDLE TRIM appears in the SWITCHES list for THROTTLE HOLD mode, so the 1000H's menus change depending on which mode is active.

CCPM Mixing

The 1000H is capable of both three-servo and four-servo CCPM mixing. In this control system multiple servos act in unison to raise and lower the swashplate for collective pitch and differentially to tilt it for cyclic pitch control. Selecting CCP3 or CCP4 at the INITIALIZE screen sets up the corresponding configuration. The manual describes setup and operation as virtually identical to a standard setup with a few exceptions. In three-servo CCPM the servos plug into channels 2, 3, and 5 at the receiver. In four-servo CCPM they go to channels 2, 3, 5, and 7.

Access Code

A four-digit access code may be specified to prevent unauthorized access to the transmitter's settings. Once a code is set, the 1000H asks for it whenever the EDIT/SAVE button is pressed, and no access to any menus is possible until the correct code is entered. The manual treats this feature seriously. If a code is set and later forgotten, the transmitter must be returned to Airtronics to be reset, and the manual advises owners to choose a number they're not likely to forget.

Collectibility & Value

Market data for the Infinity 1000H is essentially nonexistent. No current prices, known common failures, repair procedures, or spare parts availability are documented in the available record.

Anyone chasing a 1000H should treat the manual as a starting point and verify any specification it doesn't confirm. The fact sheet carries no production years, no original price, and no specifications of any kind, and the model name doesn't appear in the general Infinity brand research at all. It sits outside the company's speaker lineup and outside the usual reference material.