RM ITALY KL-164 Vhf Linear Amplifier Ssb Fm Tone Kl 140-150MHZ

( Brand: Rm Italy ), ( Manufacturer Part Number: KL-164 ), ( Type: Linear Amplifier ), ( Supported Modes: Ssb, Fm ), ( Color: Black, Red ), ( Band: Vhf )

Review RM ITALY Kl 164 Vhf Linear Amplifier 140-150mhz Ssb Fm Black Red Two tone

The **Yaesu FT-7900R** is a legendary, full-featured VHF/UHF transceiver that has earned its reputation as one of the most versatile and reliable amateur radio rigs ever produced. Designed for both serious hobbyists and professional operators, this dual-band, all-mode radio delivers exceptional performance across the 2-meter (144-148 MHz) and 70-centimeter (430-450 MHz) bands, making it an ideal choice for FM voice, SSB, CW, and digital modes like Packet Radio and D-STAR. Its robust construction, combined with Yaesu s legendary build quality, ensures durability in demanding environments, whether you re operating from a fixed station, a mobile setup, or in the field during emergency communications.

At the heart of the FT-7900R is its **high-performance solid-state design**, featuring a **100-watt linear amplifier** (with optional external PA modules for even higher power) and a **low-noise preamplifier** that enhances weak-signal reception. The transceiver excels in **SSB (Single Sideband) and FM (Frequency Modulation)** operation, offering crystal-clear voice transmission and reception with minimal distortion. Its **two-tone squelch** feature allows for precise tuning and eliminates background noise, making conversations crisp and professional. The **VFO (Variable Frequency Oscillator) and memory channels** provide quick access to essential frequencies, while the **dual VFOs** enable simultaneous monitoring of two different frequencies useful for contesting, net control, or checking propagation conditions.

The FT-7900R s **user-friendly interface** includes a **large, backlit LCD display** with intuitive navigation via the **rotary encoder and front-panel controls**, making it easy to adjust settings even in low-light conditions. Its **built-in CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Code Squelch)** support ensures seamless communication on busy repeaters, while the **RIT (Receiver Incremental Tuning)** and **XIT (Transmitter Incremental Tuning)** functions allow for fine adjustments without retuning the entire frequency. For digital enthusiasts, the radio supports **Packet Radio (AX.25)** and **D-STAR**, integrating seamlessly with modern digital voice and data networks.

Beyond its technical prowess, the FT-7900R is renowned for its **reliability and longevity**, with many units still in active use decades after their initial release. Its **compact yet sturdy chassis** makes it perfect for both desktop and mobile applications, while the **optional mobile mounting kit** ensures stable operation in vehicles. Whether you re a **contester, emergency communicator, or casual ham radio operator**, the FT-7900R delivers the **performance, flexibility, and durability** needed to excel in any scenario. With its **timeless design, superior audio quality, and unmatched versatility**, it remains a **cornerstone of amateur radio**, proving why it continues to be a top choice for operators worldwide.

The **RM KL-164** is a VHF linear amplifier designed for the 144 148 MHz band, supporting SSB, FM, and two-tone operation. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the RM KL-164**

1. **Wide Bandwidth Coverage**

The amplifier covers the entire 144 148 MHz range, making it suitable for both amateur radio (2m band) and some aviation/commercial frequencies. This flexibility is useful for operators who need to cover multiple sub-bands without switching equipment.

2. **High Power Output**

With a maximum output of **100W (SSB/FM)**, it significantly boosts the power of lower-wattage transmitters, improving range and signal strength. This is particularly beneficial for weak-signal work, EME (moonbounce), or DX operations.

3. **Two-Tone Capability**

The inclusion of a two-tone feature allows for precise tuning of the amplifier s input match, which can help optimize performance for specific frequencies or modes. This is useful for users who need fine adjustments for optimal efficiency.

4. **Solid-State Design**

Unlike tube-based amplifiers, the KL-164 uses solid-state components, which means it is more reliable, requires less maintenance, and has a longer lifespan. It also eliminates the need for warm-up time and filament power.

5. **Compact and Portable**

The amplifier is relatively small and lightweight for its power output, making it easier to transport and install in confined spaces (e.g., mobile setups, shack installations, or field operations).

6. **Good Efficiency**

Solid-state amplifiers generally consume less power than tube amplifiers when delivering high output. The KL-164 is designed to operate efficiently, reducing heat generation and cooling requirements.

7. **Compatibility with Modern Radios**

It works well with most modern 2m radios, including those with digital modes (e.g., DMR, D-Star) if used in FM mode. The SSB capability also makes it versatile for CW and voice modes.

8. **Affordable Price**

Compared to some high-end linear amplifiers, the KL-164 offers strong performance at a relatively reasonable cost, making it accessible for hobbyists and budget-conscious operators.

9. **Easy Installation**

The amplifier is designed for straightforward installation, with clear wiring instructions and minimal external adjustments required once set up.

10. **Durable Construction**

The enclosure appears to be robust, with proper shielding to reduce interference and protect internal components from environmental factors.

---

### **Cons of the RM KL-164**

1. **Limited Frequency Range**

While the 144 148 MHz range is standard for 2m, some users may find it restrictive if they need to cover other bands (e.g., 70 cm or 6m) without additional equipment. However, this is not a major drawback for most 2m-focused operators.

2. **No Built-in Tuner for All Modes**

While the two-tone feature helps with tuning, some users may prefer a fully automatic tuner for quick and precise matching across different modes (e.g., SSB vs. FM). Manual tuning can be time-consuming, especially for beginners.

3. **Potential for Heat Dissipation**

Although solid-state amplifiers are generally more efficient, high-power operation can still generate heat. Users may need to ensure proper ventilation or cooling to prevent overheating, especially in enclosed spaces.

4. **Input Power Limitations**

The amplifier is designed for input power up to **50W**, which may limit its use with higher-power transmitters (e.g., 100W radios). Users with very high-power rigs may need to attenuate the input signal to avoid overdriving the amplifier.

5. **No Built-in Protection Features**

Some higher-end amplifiers include over-voltage, over-current, or reverse-polarity protection. The KL-164 lacks these safeguards, which could pose a risk if misused (e.g., connecting incorrect power or signals).

6. **Limited Brand Recognition**

RM (Radio Mobile) is not as well-known as some other amplifier manufacturers (e.g., Yaesu, Icom, or Kenwood). This may make finding replacement parts or technical support more difficult in some regions.

7. **Potential for RF Leakage**

Like all amplifiers, improper shielding or installation can lead to RF leakage, which may interfere with nearby electronics or pose safety risks. Users must ensure proper grounding and installation practices.

8. **No Built-in SWR Meter**

Some amplifiers include an SWR meter to monitor impedance matching. The KL-164 does not, so users must rely on external meters or rely on the two-tone feature to ensure proper matching.

9. **Limited Documentation or User Support**

Depending on the region, users may find that documentation or after-sales support for the KL-164 is less comprehensive compared to more established brands. This could be a concern for troubleshooting or upgrades.

10. **No Digital Mode Support (Beyond FM)**

While the KL-164 works with FM, it does not natively support digital modes like DMR, D-Star, or FT4/FT8 unless used in conjunction with an FM radio. Users interested in digital modes may need additional equipment.

---

### **Conclusion**

The **RM KL-164** is a solid, budget-friendly linear amplifier that excels in the 2m band, offering high power output, wide coverage, and solid-state reliability. Its two-tone feature provides flexibility for tuning, and its compact design makes it suitable for both fixed and mobile setups. The amplifier is well-suited for operators who prioritize performance, portability, and affordability without needing advanced features like automatic tuning or digital mode support.

However, its lack of built-in protection features, limited frequency range, and potential reliance on manual tuning may be drawbacks for users who require more hands-off operation or broader band coverage. Additionally, the lesser-known brand may pose challenges in terms of support and parts availability.

For most **2m SSB/FM users** especially those working weak signals, EME, or DX the KL-164 is a **strong recommendation**. It strikes a good balance between performance and cost, making it an excellent choice for hobbyists and operators who want to boost their signal without investing in premium equipment.

For users who need **automatic tuning, digital mode support, or broader frequency coverage**, a more advanced amplifier (e.g., Yaesu FL-7000, Icom AL-80, or Kenwood TS-990S amplifier) may be preferable. But for the average 2m operator, the KL-164 delivers reliable performance at a reasonable price.

Details:

RM Italy KL 164 VHF Linear Amplifier 140-150MHz SSB FM Black Red Two-Tone.

part #: kl164 price

• $150.00

specifications hamamateuradio:

• brand: Rm Italy
• mpn: Kl-164
• type: Linear Amplifier
• supported modes: Ssb, Fm
• color: Black, Red
• band: Vhf

seller hamamateuradio:

• city: Wilkes-Barre, Pennsylvania
• # reviews: 6
• rating: 80.0%

shipping hamamateuradio:

• carrier: USPS
• cost: $53.93
• transit: 5-12 Days
• type: Calculated
• class: Standard
• service: USPS Ground Advantage

offer hamamateuradio:

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

payments hamamateuradio:

• credit card: Discover
• wallet: Paypal
• other

returns hamamateuradio:

• policy: No Returns

general hamamateuradio:

• condition: Used
• Radio Communication > Ham, Amateur Radio > Ham Radio Amplifiers

Rm Italy KL-164 Is Similar To:

• 11 Rm Italy Broad Band (27.5% similar) Warranty issue's. 300 mhz: cw, ratty data DATA28. Electronic switch inversion polarity protection frequency hf supply cc input energy a power am - fm ssb cw out put Sr 1,1 1,5 mode fuse 3X12 antenna pre amplifier 26 db these units are for 10 meter amateur ham radio use only. 10 meters novice and ...(September 26th, 2017)
• 70 Watts Radio 144 135-175 Vhf 2m Italy Amplifier Rm La Mhz Wideband Ht (35.8% similar) Output is a nominal 60 watts at full power 70 watts max input drive from. 5 watt to maximum of 4 watts , ideally suited to low power handheld transceivers. Br a amp that is a great piece of gear. Dampen Rm Italy la 144 wide band vhf 2m amplifier mhz for vhf 2 meter ht radio the la 144 is a wide...(February 23rd, 2015)
• Italy Meter 7405 Free 10 Id Rm Kl 2actrkl7405v Linear Amplifier Fcc Shipping (42.3% similar) The new Rm Italy kl meter linear amplifier free shipping in us passed FCC lab test, just got certified by FCC, FCC id 2ACTRKL7405V working voltage from 11V to 14VMAXIMUM current consumption 18A safety fuse 20A frequency range 28 30MHZ, low pass filter inside band 10 meters maximum gain 15DB input ...(March 5th, 2015)
• Fan 7505v 10 Id Fcc Rm Italy Meter 2actrkl7505v Amplifier Kl Linear (35.4% similar) The new Rm Italy kl 7505V 10 meter linear amplifier passed FCC lab test, just got approved by FCC, FCC id 2ACTRKL7505V working voltage from 11V to 14V maximum current consumption 30A safety fuse A0A frequency range 28 30MHZ,LOW pass filter inside band 10 meters maximum gain 15DB input power 1/5 w ...(February 23rd, 2015)
• 505v Rm Italy Broad Band (26.9% similar) Setting 1 saw 55W, 2 approx 90W, 3, 145W. The two fans run only when operator keys down. Two 38 inch power cables are included but not pictured. Etc volts and 30 to 35A continuous power run this amp. Max recommended input on ssb is 20W, and am fm cw 10W. 3 vst, it produced a clean 305 watts on ...(September 18th, 2017)
• Reserve Italy Band Rm Kl 7505v Mod (28.1% similar) Working voltage from 11V to 14V maximum current consumption 30A safety fuse 30A hf 3/3 0MHZ coverage due to the mod maximum gain 15DB input power 1/5 w 10W max am fm cw mode maximum power out 60W 200W max on am fm cw mode 225W max. The modification permits it to transmit an all ham bands from 3 to...(February 21st, 2015)
• Hla150plus Rm Italy Plus High Power Hf Linear Amplifier Max (46% similar) Is in good condition physically and operationally. Just don't need anymore. Rm Italy HLA150 plus high power linear amplifier for 12V application this is suitable all modest also has led indicators band and output auto TX Rx switching with ssb delay switch inbuilt features such as Sr protection over ...(June 27th, 2018)
• Kl 200-p Rm Italy Untested Linear Amplifier (42.3% similar) Untested linear amplifier Rm Italy KL-200P...(November 1st, 2018)
• Kl-203-p Rm Italy Linear Amplifier (43.9% similar) Used a handful of times,never over 3 seconds,almost new condition...(February 2nd, 2018)
• Kl-203p Rm Italy Hf Linear (32.1% similar) This is being sold as - parts not working because I can't be there to oversee proper installation and of unscrupulous sappers. This offer is for a new open box KL-203P mobile hf amplifier low drive 5 watt max on am 10 ssb delay switch preamps off power w led fuse internal...(April 18th, 2017)
• Kl-300 Rm Italy By With Free Mini Jumper (26.7% similar) Here is the list of frequencies that this unit to be used in accordance with f mhz: cw, ratty DATA28. 700 mhz: cw, phone, image these unit are covered by the manufacturers warranty only. Am ssb switch on off preamps heavy duty wrap around heat sink. Must contact manufacturer for r features: am fm ...(March 9th, 2018)