DIAMOND ANTENNA AZ504SP Dual Mobile 144/440

( Brand: Diamond Antenna ), ( Part Type: Band Mobile ), ( Color: Chrome ), ( Item Weight: 4.4 Ounces ), ( Manufacturer Part Number: AZ504SP )

Review DIAMOND ANTENNA 144/440 Mhz Dual band Mobile Chrome Gain

The Diamond Antenna AZ504SP is a compact, high-performance dual-band mobile antenna designed for use with 144 MHz and 440 MHz ham radio systems. This antenna is an excellent choice for those seeking to improve the signal strength and reliability of their handheld or mobile radio communications.

The AZ504SP is a diamond-shaped,discone antenna, which provides excellent dual-band coverage with minimal interference between the two bands. The antenna element is constructed from high-quality, durable materials, including a corrosion-resistant stainless steel mount and a low-loss, RG-58 coaxial cable.

The antenna features a unique adjustable design that allows for fine-tuning of the antenna elements to optimize signal reception. The adjustable radials can be rotated and adjusted to provide maximum gain and directionality in various operating conditions. This is particularly useful when operating in urban environments or when dealing with interference from other radio signals.

The AZ504SP is also compact and lightweight, making it an ideal choice for mobile use. The antenna measures just 11 inches by 12 inches by 4 inches, and it weighs only 1.3 pounds. This makes it easy to install and transport, making it a popular choice among ham radio enthusiasts and emergency responders who need to stay connected on the go.

Despite its compact size, the AZ504SP delivers impressive performance. It offers a maximum gain of 5 dBi on both the 144 MHz and 440 MHz bands, providing superior signal strength and clarity compared to standard stock antennas. The antenna also features a wide bandwidth, which allows it to cover a broad range of frequencies on each band.

The Diamond Antenna AZ504SP is easy to install, with a simple mounting system that allows for quick and secure attachment to most vehicles. The antenna comes with a comprehensive instruction manual, which provides clear and detailed guidance on installation, adjustment, and maintenance.

In conclusion, the Diamond Antenna AZ504SP is a high-performance, compact, and adjustable dual-band mobile antenna that is perfect for ham radio enthusiasts and emergency responders who need to stay connected on the go. Its unique design provides excellent coverage on both the 144 MHz and 440 MHz bands, with a maximum gain of 5 dBi on each band, making it an invaluable tool for enhancing the signal strength and reliability of your mobile radio communications.

Pros and Cons of buying a Diamond Antenna AZ504SP Dual-Band Mobile Antenna for 144/440 MHz

The Diamond Antenna AZ504SP is a popular choice among amateur radio operators and mobile communications users for its dual-band capability, covering both the 144 MHz (2-meter) and 440 MHz (70-centimeter) frequencies. In this analysis, we will explore the advantages and disadvantages of investing in this antenna.

1. Dual-band coverage: The AZ504SP supports both 144 MHz and 440 MHz bands, making it a versatile option for users who require communication on both bands.

2. Compact design: The antenna has a small, low-profile design, making it suitable for mounting on vehicles with limited space.

3. Durable construction: The antenna is made of high-quality materials, ensuring resistance to harsh weather conditions and frequent use.

4. Easy installation: The AZ504SP comes with a magnetic mount, which makes it simple to install and remove as needed.

5. Improved performance: By using a dedicated antenna instead of relying on the stock antenna, users can expect improved signal quality and increased range.

1. Limited gain: The AZ504SP has a relatively low gain compared to other dedicated mobile antennas, which might result in reduced range or signal strength in some situations.

2. Additional cost: Upgrading to a dedicated mobile antenna like the AZ504SP involves an additional investment, which may not be feasible for all users.

3. Requires a ground plane: The antenna requires a ground plane or a good ground connection to perform optimally, adding to the complexity of the installation process.

The Diamond Antenna AZ504SP offers a compact, durable, and versatile solution for users requiring dual-band coverage on the go. Although it has some limitations, such as a relatively low gain and the need for a ground plane, its advantages, including easy installation and improved performance, often outweigh the cons. If you're in need of a mobile antenna for 144/440 MHz communication and can afford the additional cost, the AZ504SP is a solid choice.

I would recommend the Diamond Antenna AZ504SP to users who require dual-band coverage for their mobile communications needs, have limited space for mounting an antenna, and are willing to invest in a high-quality, durable antenna. If you're looking for a more powerful antenna with a higher gain, consider researching other options with greater power handling capabilities.

Details:

Color: Chrome. Number of Items: AZ504SP Diamond 144/440 MHz Dual-Band Mobile Antenna, Chrome, Gain: Chrome: Package Dimensions: 16.73 x 2.4 0.55 inches. Manufacturer: Diamond Antenna.

Brand: Diamond Antenna. Taller Antennas may not be suitable for magnetic mount, so other mounting options are available. Antenna: Radio. You can find the exact combination of features you want to suit any dual-band mobile Antenna need.

Item model number: AZ504SP. All mobile Antennas represent some sort of compromise. Antennas with the 'fold-over' feature offer yet another solution. AZ504SP Diamond Antenna Dual-Band Mobile.

part #: az504sp prices

• $49.95-$59.95

specifications radiorigor:

• brand: Diamond Antenna
• part type: Band Mobile
• color: Chrome
• item weight: 4.4 Ounces
• manufacturer part number: AZ504SP

offer radiorigor:

• sold: 0
• started: June 13, 2025
• options: Ship-to-home
• availability: In Stock
• quantity: 1

shipping radiorigor:

• service: UPS Ground
• type: Fixed
• carrier: UPS
• cost: $0.00
• class: Standard
• transit: 4-8 Days

payments radiorigor:

• wallet: Paypal
• credit card: Diners-club
• other

general radiorigor:

• condition: New
• Radio Communication > Antennas > Other Radio Antennas

seller radiorigor:

• city: US
• # reviews: 2413
• rating: 96.1%

returns radiorigor:

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

Diamond Antenna AZ504SP Is Similar To:

• Diamond Sg7000 Antenna Super Gainer 144 430mhz 2m 144-148 70cm 440-450 Mhz (41.4% similar) There is a 'garage' smell to the packaging, it may have gotten wet at some point in past. Preowned, but Antenna looks to be in good shape overall nothing broken, no major marks/dents/etc. Please see pictures for details. Comes in the original packaging...(June 26th, 2024)
• Diamond Antenna Cp22e Original High-gain Monoband Silver White (50.8% similar) Brand: Diamond Antenna. Diamond Antenna original CP22E high-gain mono band silver, white: Antenna: radio. Factory tuned, no adjustments required. Maximum range: 2 meters. Stainless steel mounting hardware and radials. Encapsulated matching network for weather protection...(September 14th, 2024)
• Diamond Sg7200 High Gain Antenna Sg-7200 144 430mhz Dual Band Vhf uhf Mobile Car Radios (59.6% similar) Mistakes may happen and might go above beyond to resolve any issues. It barely exceed 24 hours to respond. Note to buyers: all the content of have been written base on facts and our best knowledge. If its not pictured included...(September 27th, 2024)
• Diamond Srh120 Airband Antenna 120mhz Sma Japan (44.2% similar) New, Diamond SRH120 vhf hairband Antenna. SAM connector...(December 16th, 2024)
• Diamond Srh103 Airband Antenna 120 300mhz Sma Japan (42.7% similar) New, Diamond SRH103 vhf/uhf hairband Antenna. SAM connector...(December 16th, 2024)
• Diamond Rh103 Airband Antenna 120 300mhz Bnc Japan (43.1% similar) New, Diamond RH103 vhf/uhf hairband Antenna. NBC connector...(December 16th, 2024)
• Diamond Mr75sj Dualband Mobile Antenna 2m 70cm 20 Inch Magnet Mount Lmr100 Cable (37.5% similar) Specifications: brand: Diamond Antenna. The Diamond MR75SJ is a convenient and versatile dual-band mobile Antenna package, perfect for getting you on the air quickly easily. Key features: dual-band operation: covers the 2-METER 144-148 mhz and 70-CENTIMETER 440-450 amateur radio bands...(February 24th, 2025)
• Diamond Antenna Srh789 Handheld Scanner Antennas Black (44.1% similar) Handheld scanner Antennas SRH789 black: package dimensions: 10.75 x 1.69 0.43 inches. Their convenient fold-over hinge allows these Antennas to fold for safety and durability. Part type: handheld and scanner Antennas portable Antenna connector: SAM, male telescopic...(June 13th, 2025)
• Diamond Crystal Nr72bnmo Antenna Dual-band Mobile Antennas (55.7% similar) All mobile Antennas represent some sort of compromise. Diamond Antenna dual-band mobile Antennas are a great combination of price, quality, and versatility. Antennas with the 'fold-over' feature offer yet another solution. Antenna: Diamond original NR72BNMO dual band mobile Antenna...(June 14th, 2025)
• Diamond Antenna Az507rsp 144 440 Mhz 27.5 Inch Radio Spring Base Pl-259 Mount- (58.3% similar) Less than 2.0. Diamond AZ507RSP. 144MHZ -1/2L radial less, 440MHZ - 2X5/8L radial less. 2.15DBI 144MHZ / 4.9DBI 440MHZ...(October 28th, 2025)
• Diamond Antenna Az504rsp 144 440 Mhz Dual Band 15.5 Inch Radio Pl-259 Mount (66.7% similar) 144MHZ -1/4L, 440MHZ - 1/2 Diamond AZ504RSP...(October 28th, 2025)