GE 19D432500G3 Mastr Programmable Ctcss Channel Guard Tone Decoder Board Cg

( Brand: Ge ), ( Manufacturer Part Number: 19D432500G3 ), ( Compatible Brand: Motorola ), ( Type: Ctcss Tone Decoder Board ), ( Band: Uhf, Vhf ), ( Features: Selectable Tone Frequency ), ( To Fit: Ham Radio Transceiver, Two-way Base Radio ), ( Country Of Origin: United States )

Review GE Mastr Programmable Ctcss Channel Guard Tone Decoder Board Cg

The **GE 19D432500G3 Mastr Programmable CTCSS Channel Guard Tone Decoder Board (CG)** is a high-performance, modular accessory designed to enhance the functionality of modern two-way radio systems by providing advanced tone decoding capabilities. This sophisticated board integrates seamlessly into the GE Mastr series of radios, offering precise detection and filtering of Continuous Tone-Coded Squelch Systems (CTCSS) and Digital-Coded Squelch (DCS) tones, which are essential for secure and interference-free communication. Engineered with a programmable architecture, the CG board allows users to configure and store multiple tone plans, making it ideal for applications requiring dynamic channel management, such as public safety, emergency services, fleet management, and private business networks. Its robust design ensures reliable operation in demanding environments, including those with high levels of electromagnetic interference, while its compact form factor enables easy integration into existing radio systems without compromising performance. The decoder board supports a wide range of standard and custom tone frequencies, including both CTCSS (sub-audible tones) and DCS (digital codes), allowing for granular control over channel access and squelch activation. With features like tone verification, programmable sensitivity, and flexible output options, the GE 19D432500G3 CG board empowers operators to implement secure, private, or priority-based communication channels with confidence. Whether deployed in a single-unit radio or as part of a larger networked system, this decoder board delivers unmatched flexibility and reliability, ensuring clear, authorized, and uninterrupted voice transmissions.

### Overview of the GE 19D432500G3 Mastr Programmable CTCSS Channel Guard Tone Decoder Board (CG)

The GE 19D432500G3 is a programmable CTCSS (Continuous Tone-Coded Squelch System) decoder board designed for use in two-way radio systems. It allows for the decoding of sub-audible tones used to control squelch, ensuring that only transmissions with the correct tone are audible. This board is part of the Mastr series, which is known for its flexibility and integration with various radio systems.

---

### Pros of the GE 19D432500G3 CTCSS Decoder Board

The board is programmable, meaning it can be configured to decode a wide range of CTCSS tones (typically 67.0 Hz to 250.4 Hz in 5 Hz increments). This flexibility allows users to customize the decoder for specific applications, such as different frequency ranges or tone combinations, without needing multiple hardware units.

It is designed to integrate seamlessly with GE Mastr series radios and other compatible systems. This ensures that it can be easily retrofitted or used in new installations where CTCSS decoding is required.

CTCSS tones help reduce interference by ensuring that only transmissions with the correct tone open the squelch. This board improves the reliability of squelch control, reducing unwanted noise and improving clarity in communications.

GE (General Electric) is a well-known brand in industrial and communication equipment, and their products are generally built to last. The Mastr series is particularly robust, making it suitable for harsh environments or heavy-duty use.

The programmable nature of the board allows for advanced features such as tone squelch, tone burst decoding, and other tone-related functions that can enhance the performance of the radio system.

For systems requiring multiple tone decoders, this programmable board can be more cost-effective than purchasing multiple fixed-tone decoders, as it can be reprogrammed for different tones as needed.

The board is designed for straightforward integration into existing systems, often requiring minimal additional wiring or configuration beyond programming the tones.

---

### Cons of the GE 19D432500G3 CTCSS Decoder Board

While the board is highly compatible with GE Mastr radios, it may not be compatible with non-GE systems or other brands without additional adapters or modifications. This can limit its versatility if you are working with a mixed-brand system.

Although programmable, configuring the board correctly requires some technical knowledge. Users may need to consult documentation or seek assistance to set up the correct tones, especially if they are unfamiliar with CTCSS programming.

Incorrect programming can lead to issues such as the decoder failing to recognize valid tones or being overly sensitive to noise, resulting in false squelch activations. This could degrade the performance of the radio system.

Like all electronic components, the board requires a stable power supply to function correctly. In environments with poor power quality or frequent fluctuations, the board may experience malfunctions or reduced reliability.

The board lacks built-in diagnostic tools, meaning troubleshooting issues such as signal loss or incorrect tone decoding may require additional equipment or expertise.

Depending on the age or rarity of the model, finding replacement parts or technical support may become challenging over time. GE has shifted focus away from some of its older industrial products, which could impact long-term availability.

While the board is programmable and potentially cost-effective for large-scale use, the initial purchase price may be higher than fixed-tone decoders, especially for small-scale applications where programmability is not a necessity.

---

### Conclusion

The GE 19D432500G3 Mastr Programmable CTCSS Channel Guard Tone Decoder Board is a powerful and versatile tool for enhancing the performance of two-way radio systems, particularly within the GE Mastr ecosystem. Its programmability, reliability, and compatibility with advanced features make it an excellent choice for users who require flexibility and robust squelch control. However, its limitations such as brand-specific compatibility, potential programming challenges, and reliance on technical expertise may pose obstacles for some users.

For users working within a GE Mastr system or those who need to decode multiple CTCSS tones across different channels, this board is highly recommended. It offers significant long-term benefits in terms of customization and reliability. On the other hand, users working with non-GE systems or those who require simple, fixed-tone decoding may find that alternative solutions are more suitable.

---

### Recommendation

- You are integrating it into a GE Mastr radio system.

- You need the flexibility to program multiple CTCSS tones for various channels.

- You prioritize durability and reliability in a potentially harsh operating environment.

- You have the technical knowledge or support available to program and troubleshoot the board.

- You are working with non-GE radio systems without compatibility assurances.

- You require a simple, fixed-tone decoder for a small-scale application.

- You lack the technical expertise to program or maintain the board.

- You are concerned about long-term availability of parts or support for this specific model.

For most professional or industrial applications where programmability and reliability are critical, the GE 19D432500G3 is a strong recommendation. Always ensure that your system requirements align with the board s capabilities and that you have access to the necessary resources for installation and maintenance.

Details:

The 10 - DIP switches allow programming all CTCSS Sub-Audible tones from 67.0 Hz to 210.7. No Direct Overseas Sales. This is a GE model 19D432500G3 Programmable CTCSS Tone Decoder Board for use with MASTR-II series Base Stations, Repeaters and Mobile radios. Info from a manual copy I found on-line.

part #: 19d432500g3 price

• $27.99

specifications hamamateuradio:

• brand: Ge
• mpn: 19d432500g3
• compatible brand: Motorola
• type: Ctcss Tone Decoder Board
• band: Uhf, Vhf
• features: Selectable Tone Frequency
• to fit: Ham Radio Transceiver, Two-way Base Radio
• country of origin: United States

General hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Other Ham Radio Equipment
• condition: Used

shipping hamamateuradio:

• transit: 4-10 Days
• type: Fixed
• cost: $7.65
• service: Economy
• class: Economy

offer hamamateuradio:

• options: Ship-to-home
• sold: 0
• started: June 1, 2026
• quantity: 1
• availability: In Stock

payments hamamateuradio:

• wallet: Paypal
• credit card: Mastercard
• other

seller hamamateuradio:

• city: NW Oregon
• # reviews: 1982
• rating: 100.0%

returns hamamateuradio:

• policy: No Returns

Ge 19D432500G3 Is Similar To:

• Rev 2 Repeater Mhz 0010 Board 012-0011 Circut Vhf Ii 155 Mastr Ge (23.8% similar) If you know the correct name for something I have listed please let me know. I was told they were both in working order when I purchased them. They were used for the ems 911 office in a city here in pa. I will not be bullied. I will admit to not having the slightest clue what to call this board ...(March 10th, 2015)
• 103010v120 M-a-com Ge Mastr Iii (20.2% similar) Offering 1 used good shape m a-com Ge mastr iii 600WATT continuous power supply P/N PS103010V120, model SP593-1A, please reefer to all pics for details, many available in similar condition shipping charge is lower 48 us states...(December 14th, 2017)
• Circut Antenna Ge 19d416859g2 Mastr Repeater 2 Mhz Vhf Board Ii 155 (38.6% similar) I was told they were both in working order when I purchased them. It is used but I do not see anything wrong with it other than being dirty. They are just to large and heavy to ship whole and I never received any interest in them whole. I will not be bullied. They were used for the ems 911 office in...(March 11th, 2015)
• 4ek14a10 Ge Cg Board (20.4% similar) I have not tested this item. The red tone element is included with cg board. It may be used in the mastr progress line desk top and wall mount stations. Here is a Ge model 4EK14A10 channel guard board...(March 5th, 2018)
• 4ex3a10 Ge Mastr Pro Program Test Set (38.3% similar) Any currency or coins shown in pictures are for size reference only and not included the offer. This was surplus equipment from the government. I am not able to determine the exact model. Selling as parts only. I have no working knowledge of this unit and way to test. This sale is for parts only. ...(May 21st, 2018)
• 4ex8k10 Ge Test Set Mastr (17.5% similar) The cable harness cloth is frayed at meter panel entrance. All of the wires there, appear in good condition. Here is a working Ge 4EX8K10 test set for the mastr progress and pro stations. It has some scuffs in the paint and face plate. It would make a nice working addition to your collection. It is ...(November 6th, 2017)
• Di76kas66 Ge Mastr Repeater Radio Comb Type Only (30.2% similar) This was surplus equipment from the government. Tumblers and latches are stored inside to prevent unwanted latching. This sale is for parts only. Absolutely no FedEx - cod or shipping on anthers account if you are a Canada buyer the item is truck ship we must have your phone for paper work before ...(May 9th, 2018)
• Dm76kas66 Ge Mastr Repeater Radio Comb Type Only (30.2% similar) This was surplus equipment from the government. Both front and rear covers are present, but there is no key. No attempt has been made to power on. Absolutely no FedEx - cod or shipping on anthers account if you are a Canada buyer the item is truck ship we must have your phone for paper work before ...(May 21st, 2018)
• 19b206576 Ge Mastr Progress Line Receiver Crystal Set 464.350 464.300 P-7 (38.4% similar) 300 Ge 19B206576 relevant items tested upon listing and than again before shipping. Combined shipping available. I am not interested in making money off of shipping, packaging or handling. New old stock and in their original unopened packaging. Ask any questions. Delivery confirmation is included on...(July 22nd, 2016)
• T461.500 19d432679g2 Mastr Master Ge General Electric Ii Master2 Uhf Exciter Board With 2c Icom Element (37.6% similar) This was removed from a parts room at a decommissioned tower site and sold as is. All parts look good and there does not appear to be any repairs to the bottom of the board...(February 22nd, 2016)
• M95au88a Motorola Ge Mastr Ii (20.6% similar) 325CHANNEL guard board 19D432500G, dip switch programmable channel filter 19C320627G1VOTING tone 19C320880G1SECURE it notch 19C328328G2PLUG with wires see pic being for parts or repair, sold as is. Used Ge mastr ii master repeater uhf receive tray assembly M95AU88A PL19D417075G36 - untested up for ...(January 14th, 2018)