ITT 800420IG2 Radio Transmitter Solid Am Vhf T-1108/GRT-21

( Brand: Itt ), ( Manufacturer Part Number: 800420IG2 ), ( Model: T-1108/GRT-21 ), ( Type: Ham Radio Transmitter ), ( Unit Type: Unit ), ( Band Type: Mono Band ), ( Color: Multicolor ), ( Band: Vhf ), ( Country Of Origin: United States ), ( Power: 10 W )

Review ITT Radio Transmitter T-1108/grt-21 Solid State Am Vhf Untested

The **ITT 800420IG2 Radio Transmitter (Model T-1108/GRT-21)** is a robust, high-performance **Solid-State AM/VHF Transmitter** designed for military, government, and critical communications applications where reliability, durability, and secure transmission are paramount. Engineered by ITT Corporation now part of Harris Corporation this transmitter represents a legacy of innovation in tactical radio systems, combining advanced solid-state circuitry with ruggedized construction to ensure dependable operation in demanding environments. Built to meet stringent military specifications, the T-1108/GRT-21 operates in the **Very High Frequency (VHF) band**, typically spanning from **30 MHz to 88 MHz**, making it ideal for short-to-medium range communications in field deployments, naval vessels, or fixed installations where interference resistance and clear voice/data transmission are essential.

This transmitter employs **Amplitude Modulation (AM)** for its primary signal modulation, delivering a **high-power output** (typically ranging from **25 watts to 100 watts**, depending on configuration) to ensure strong signal projection over extended distances while maintaining compatibility with a wide array of antennas and modulation schemes. Its **solid-state design** eliminates the need for bulky, maintenance-intensive vacuum tubes, reducing operational costs and extending operational lifespans through enhanced reliability and reduced thermal stress. The unit features a **modular architecture**, allowing for easy upgrades or repairs without compromising system integrity, a critical advantage in field conditions where downtime is unacceptable.

Security and encryption are integral to the T-1108/GRT-21 s functionality, as it is often integrated with **Frequency Hopping Spread Spectrum (FHSS)** or **Frequency Shift Keying (FSK)** for secure voice and data transmission, ensuring resistance against jamming and eavesdropping. The transmitter s **automatic frequency control (AFC)** and **agc (automatic gain control)** systems optimize signal stability, minimizing distortion and ensuring clear audio reproduction even under adverse conditions. Additionally, its **remote control capabilities** allow for seamless integration into larger communication networks, enabling centralized management of multiple transmitters from a single console a feature invaluable for military command centers or emergency response operations.

Physically, the T-1108/GRT-21 is constructed with **military-grade materials**, featuring a **rack-mountable or freestanding chassis** designed to withstand extreme temperatures, humidity, and mechanical stress, adhering to **MIL-STD-810G** and **MIL-STD-461E** standards. Its compact yet sturdy form factor makes it adaptable for deployment in vehicles, ships, or fixed installations, while its **low-power consumption** ensures prolonged operation from standard power sources. The unit also incorporates **redundant power supplies** and **fail-safe mechanisms** to prevent data loss or signal interruption during critical transmissions.

Beyond its technical specifications, the T-1108/GRT-21 holds historical significance as part of ITT s legacy in defense electronics, having been widely used by the **U.S. Navy, Marine Corps, and other allied forces** during the Cold War and beyond. Its enduring reputation for durability and performance has made it a trusted asset in both military and civilian applications, including **government agencies, law enforcement, and disaster response teams** where dependable communication is non-negotiable. For collectors, historians, or modern operators seeking a proven solution for legacy or hybrid communication systems, the ITT 800420IG2 remains a testament to engineering excellence in the realm of tactical radio transmission.

### Pros and Cons of buying a ITT 800420IG2 Radio Transmitter (T-1108/GRT-21 Solid AM VHF)

1. **Reliability and Durability** The ITT 800420IG2 is a well-established military-grade radio, known for its robust construction and long operational lifespan. It was designed for harsh environments, including military and emergency use, which suggests it can withstand extreme conditions.

2. **Wide Frequency Range** This radio operates in the VHF (Very High Frequency) band, which is ideal for long-range communication, especially in open areas. The AM (Amplitude Modulation) capability ensures compatibility with older military and emergency systems.

3. **Compact and Portable** Despite its rugged design, the unit is relatively portable compared to some military-grade radios, making it easier to deploy in field operations or emergency scenarios.

4. **Compatibility with Military and Emergency Networks** The T-1108/GRT-21 was widely used by the U.S. military and emergency services, meaning it may still be compatible with legacy systems in government or military applications.

5. **Proven Performance in Field Conditions** Due to its military heritage, this radio has been tested in various operational environments, including battlefield and disaster zones, where reliability is critical.

6. **Modular Design** Some versions of this radio family support modular upgrades, allowing for the addition of accessories like external antennas or encryption modules if needed.

7. **Availability of Parts and Support** As an older but still widely recognized model, replacement parts and technical support may still be available, though this could vary depending on the supplier.

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1. **Age and Obsolescence** This radio is several decades old (originally developed in the 1970s 1980s), meaning it lacks modern features such as digital communication, encryption standards, or compatibility with contemporary radio systems.

2. **Limited Digital Capabilities** The unit operates primarily in analog (AM) mode, which is less secure and less efficient than modern digital modulation techniques (e.g., FM, FSK, or digital voice). This makes it vulnerable to interference and eavesdropping.

3. **Maintenance Challenges** Older military radios require specialized knowledge for repair and maintenance. Finding trained technicians or authorized repair centers may be difficult, especially if the unit is no longer in active military use.

4. **No Built-in Encryption** Modern military and emergency radios often include encryption to protect sensitive communications. The ITT 800420IG2 lacks such features, making it unsuitable for secure operations in today s threat environment.

5. **Power Requirements** While it may be battery-powered, older radios often have higher power consumption or less efficient power management compared to modern units, which could limit operational endurance.

6. **Limited Software or Firmware Updates** Unlike newer radios, this model cannot be upgraded with software patches or new features, which could be critical for adapting to evolving communication standards.

7. **Potential for High Cost of Ownership** While the initial purchase price may be reasonable, long-term costs such as spare parts, maintenance, and potential upgrades could add up, especially if the radio is used in demanding environments.

8. **Regulatory Compliance Issues** Modern VHF radios must comply with current FCC or international regulations regarding emissions, encryption, and frequency usage. An older model may not meet these standards without modifications.

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The ITT 800420IG2 (T-1108/GRT-21) is a **highly reliable, rugged radio** with a proven track record in military and emergency applications. Its strengths lie in durability, portability, and compatibility with legacy systems. However, its **analog-only operation, lack of modern encryption, and obsolescence** make it unsuitable for most contemporary uses, particularly in civilian, commercial, or secure military contexts.

If you require **long-range, analog VHF communication in a niche or historical application** (e.g., military surplus, hobbyist use, or compatibility with older networks), this radio could still be a viable option. However, for **modern communication needs especially in security-sensitive or commercial settings it is significantly outdated** and would likely require supplementation or replacement with a newer digital radio.

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- You need a **legacy military radio** for historical, surplus, or compatibility reasons.

- You are operating in an environment where **analog-only communication** is acceptable (e.g., emergency backup systems with limited frequency requirements).

- You have access to **specialized maintenance support** and can justify the long-term costs.

- You require **digital encryption, modern modulation, or interoperability with current radio networks**.

- You need **low maintenance, easy upgrades, or long-term reliability** in civilian or commercial applications.

- You are looking for **cost-effective, future-proof communication solutions** modern VHF radios (e.g., Baofeng, Icom, or Motorola models) offer better performance for similar or lower prices.

For most users today, investing in a **modern VHF radio with digital capabilities, encryption, and better power efficiency** would be far more practical. However, if you have a specific use case where the ITT 800420IG2 fits, it remains a capable (if outdated) choice.

Details:

Includes Radio TransmItter. ITT Radio TransmItter T-1108/GRT-21 Solid State AM VHF 800420IG2 Untested: Item Details: Manufacturer ITT, model T-1108/GRT-21, Part Number800420IG2, Condition Device has scuffs and scratches from normal use. Dented and misaligned case.

part #: 800420ig2 prices

• $139.99-$154.99

specifications hamamateuradio:

• brand: Itt
• mpn: 800420ig2
• model: T-1108/grt-21
• type: Ham Radio Transmitter
• unit type: Unit
• band type: Mono Band
• color: Multicolor
• band: Vhf
• country of origin: United States
• power: 10 W

shipping hamamateuradio:

• carrier: FedEx
• transit: 5-8 Days
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day
• cost: $40.00
• class: Standard, Expedited

general hamamateuradio:

• condition: For parts or not working
• Radio Communication > Ham, Amateur Radio > Ham Radio TransmItters

returns hamamateuradio:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer
• method: Money back

payments hamamateuradio:

• wallet: Apple-pay
• credit card: Diners-club
• other

offer hamamateuradio:

• sold: 0
• options: Ship-to-home
• started: May 22, 2026
• quantity: 1
• availability: In Stock
• best offers: True

seller hamamateuradio:

• city: Salisbury, North Carolina
• # reviews: 29189
• rating: 99.7%

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