Description
3/4-Inch NMO Mount with 17-Foot or 35-Foot RG-58 Cable
Choose a 17-foot or 35-foot cable option for this Purchase Radios NMO mount listing. Both options are manufactured by E/M Wave. Select the required cable length before ordering.
Cable Length and Part Numbers
| Cable Length |
Listing SKU |
E/M Wave Manufacturer Part Number |
| 17 feet |
NMO-RG58-17-NC |
EM-M11001-058 |
| 35 feet |
NMO-RG58-35-NC |
EM-M11001-058-35 |
Key Features
-
Two cable lengths: Choose 17 feet for a shorter cable run or 35 feet when additional routing length is needed.
-
RG-58/U coaxial cable: Both assemblies are supplied without a fitted radio-side connector.
-
Brass construction: Brass components and a silver-plated contact.
-
Heavy-duty mounting claw: Supports the mounting and ground contact.
-
3/4-inch through-hole installation: NMO mounting interface for a suitable antenna and mounting surface.
Specifications by Cable Length
| Attribute |
17-Foot Option |
35-Foot Option |
| Listing brand |
Purchase Radios |
Purchase Radios |
| Manufacturer |
E/M Wave |
E/M Wave |
| Listing SKU |
NMO-RG58-17-NC |
NMO-RG58-35-NC |
| Manufacturer part number |
EM-M11001-058 |
EM-M11001-058-35 |
| Cable length |
17 feet |
35 feet |
| Cable type |
RG-58/U |
RG-58/U |
| Radio-side connector |
Not fitted; sold separately |
Not fitted; sold separately |
| Mount type |
NMO through-hole |
NMO through-hole |
| Mounting hole |
3/4 inch (19.05 mm) |
3/4 inch (19.05 mm) |
| Construction |
Brass components, silver-plated contact, heavy-duty mounting claw |
Brass components, silver-plated contact, heavy-duty mounting claw |
Choosing a Cable Length
Select the length needed for the actual cable route, allowing for installation and connection. The 35-foot option provides 18 feet more cable. Do not treat additional cable length as a signal-performance upgrade; confirm cable-loss requirements for the operating frequency and installation.
Additional Published Ratings for the 17-Foot Assembly
The attached 17-foot datasheet provides the following additional values. These are not verified ratings for the 35-foot assembly.
| Attribute |
17-Foot Datasheet Value |
| Impedance |
50 ohms |
| Mounting height |
0.375 inch / 9.5 mm |
| Outside mounting diameter |
1.13 inches / 28.7 mm |
| Frequency band |
30–1000 MHz |
| VSWR |
1.5:1 typical; antenna and frequency dependent |
| Cable insertion loss |
2.5 dB maximum, as listed in the datasheet |
| Power rating |
100 W at 1000 MHz; subject to VSWR, temperature and altitude |
| Operating temperature |
-40°C to 85°C |
| Mounting-surface weather seal |
O-ring |
| Environmental references |
Salt fog corrosion reference and 95% relative humidity; no named IP or military certification established |
Compatibility and Substitution
Use with an appropriate NMO mobile antenna and a suitable 3/4-inch through-hole mounting location. Match the antenna to the operating frequencies and select a radio-side connector compatible with both the RG-58/U cable and the radio. A matching NMO interface does not establish suitability for every antenna or installation.
The E/M Wave EM-M11001-058 assembly is offered here under SKU NMO-RG58-17-NC as a good substitute for Motorola RRDN5461A. Confirm the complete installation requirements before replacing an existing assembly.
What's Included
| Item |
Status |
Details |
| Brass NMO mount assembly |
Included |
Selected 17-foot EM-M11001-058 or 35-foot EM-M11001-058-35 assembly. |
| RG-58 cable in the selected length |
Included |
Unterminated radio-side end. |
| Mounting-surface O-ring |
Included with documented 17-foot assembly |
Confirm the 35-foot package details if this component is required. |
| Radio-side RF connector |
Sold separately |
Select the correct connector for the radio and cable. |
| Antenna and radio |
Sold separately |
Not included with the mount assembly. |
Recommended Accessories and Related Installation Hardware
These are separate installation products, not included components or confirmation of fit with every radio.
Frequently Asked Questions
Who manufactures this mount?
E/M Wave manufactures both options: EM-M11001-058 is listed as NMO-RG58-17-NC, and EM-M11001-058-35 is listed as NMO-RG58-35-NC.
Is it a good substitute for Motorola RRDN5461A?
The 17-foot EM-M11001-058 assembly is offered as a good substitute for the Motorola RRDN5461A. Confirm the mounting, antenna, cable and connector requirements for the specific installation. It is not a Motorola-branded assembly.
What does NC or No Connector mean?
The cable has no radio-side RF connector fitted. The installer selects and fits the appropriate connector after routing the cable.
What size mounting hole is required?
The datasheet specifies a 0.75-inch (19.05 mm) mounting hole. This is a through-hole mount, not a magnetic mount.
Which length should I choose?
Choose 17 feet or 35 feet to suit the installation route. The 35-foot EM-M11001-058-35 option offers extra routing length, not a claim of lower cable loss.
What cable is supplied?
Select 17 feet or 35 feet of RG-58 coaxial cable. Neither NC option includes a fitted radio-side connector. The existing datasheet documents the 17-foot assembly; its cable-loss figure is not a verified rating for the 35-foot option.
Does the O-ring prevent every possible leak?
The O-ring provides a mounting-surface weather seal. Correct surface preparation, fit and installation matter; no unconditional watertightness or IP66 certification is claimed.
Can I use any NMO antenna?
Select an antenna with a suitable NMO interface and appropriate frequency, power and installation requirements. The mount does not turn a single-band antenna into a multiband antenna.
More Resources
NMO-RG58-17-NC Data Sheet
E/M Wave 17-Foot NMO Mount — Manufacturer Product Details
E/M Wave 35-Foot NMO Mount — Manufacturer Product Details
Additional reading: Essential Accessories for Vehicle & Base Station Mobile Radios; 5 Essential Two-Way Radio Maintenance Tips; How to Use a Two-Way Radio: Step-by-Step Guide for Beginners. Browse the store's two-way radio antenna and cable collections for installation options.
Warranty
1-year manufacturer's replacement warranty.
