---
product_id: 370469963
title: "Rain Cap\" for NMO Antenna Mounts"
brand: "tram"
price: "$38.88"
currency: USD
in_stock: true
reviews_count: 5
category: "Tram"
url: https://www.desertcart.us/products/370469963-rain-cap-for-nmo-antenna-mounts
store_origin: US
region: United States of America
---

# 50 Ohm impedance Compact 1-inch height Weatherproof shield Rain Cap" for NMO Antenna Mounts

**Brand:** tram
**Price:** $38.88
**Availability:** ✅ In Stock

## Summary

> 🌧️ Stay dry, stay connected — the ultimate rain cap for your antenna base!

## Quick Answers

- **What is this?** Rain Cap" for NMO Antenna Mounts by tram
- **How much does it cost?** $38.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/370469963-rain-cap-for-nmo-antenna-mounts)

## Best For

- tram enthusiasts

## Why This Product

- Trusted tram brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit:** Designed specifically for 3/8” NMO mounts for a snug, secure cover.
- • **Highly Rated Reliability:** Over 1,000 users give it a 4.7-star seal of approval.
- • **Seamless Weather Defense:** Keep your antenna base dry and protected, rain or shine.
- • **Lightweight & Low Profile:** Just 14 grams and 1 inch tall—minimal bulk, maximum protection.
- • **Trusted American Craftsmanship:** Proudly made in the USA with quality you can rely on.

## Overview

The TRAM 1290 NMO Rain Cap is a precision-engineered, lightweight cover designed to protect 3/8” NMO antenna mounts from weather damage. With a compact 1-inch height and 50 Ohm impedance compatibility, it ensures your antenna base stays dry and functional. Made in the USA and highly rated by over 1,000 users, this rain cap is an essential upgrade for mobile antenna setups.

## Description

TRAM 1290 NMO Rain Cap

Review: Livraison Rapide - Parfait
Review: Works as intended, good product - I bought the Tram 1290 to cover my Antenna Specialists 3/8” NMO VHF antenna base after I temporarily removed the antenna and tapered spring. The Tram cover fit perfectly and works well. I would have preferred if it came with a base gasket but used clear silicone instead. The Tram 1290 is a simple but necessary product for older mobile antenna users.

## Features

- TRAM
- Original Product

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00474A1M2 |
| Antenna | Cellular |
| AntennaDescription | Cellular |
| Brand | Tram |
| Brand Name | Tram |
| Colour | Black |
| Country of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 1,016 Reviews |
| Global Trade Identification Number | 00727932011002 |
| Impedance | 50 Ohms |
| Impedance Unit of Measure | 50 Ohms |
| Item Height | 1 Inches |
| Item Weight Unit of Measure | 14 g |
| Manufacturer | TRAM |
| Number of Channels | 1 |
| UPC | 727932011002 |

## Product Details

- **Antenna:** Cellular
- **Brand:** Tram
- **Colour:** Black
- **Impedance:** 50 Ohms
- **Number of Channels:** 1

## Images

![Rain Cap" for NMO Antenna Mounts - Image 1](https://m.media-amazon.com/images/I/512jdIDI2LL.jpg)

## Questions & Answers

**Q: Will it fit the tram 269 triple 5" magnet cb antenna mount?**
A: No, the 269 is a 3/8-24 thread mount, not an NMO mount.

**Q: Can you put a spring on a wilson 5000**
A: It might be possible but I would not do it.  The Wilson 5000 is designed from the factory to tune without a spring.  Adding a spring will change the SWR and be difficult to tune.

**Q: Will this rain cap fit the male threads on a Wilson 5000 magnet mount? If not, any suggestions? Thanks!**
A: No, a standard Wilson 5000 is not an "NMO" thread.   I've seen where you can fill the back/inside of a PL-259 connector with clear silicone caulk, let dry, & that would make a "rain cap" that fits a Wilson Magnetic mount.

**Q: Will this fit a Tram 5 inch magnetic base**
A: Yes, but I think that you might have the wrong idea. This cap just covers the mount -- the threaded post with the contact. That's the part that you need to keep dry, because that's where the electrical connection is. Tram/Browning mounts have pretty much the same thread depth, regardless of the size of the base, and this covers my Tram/Browning mount. The main thing is that it's for an NMO thread, and not a PL-259 (like you find on coax) or a 3/8-24 thread (like you'd find on a Firestik CB antenna).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Livraison Rapide
*by A***É on 29 January 2025*

Parfait

### ⭐⭐⭐⭐⭐ Works as intended, good product
*by A***R on 23 December 2023*

I bought the Tram 1290 to cover my Antenna Specialists 3/8” NMO VHF antenna base after I temporarily removed the antenna and tapered spring. The Tram cover fit perfectly and works well. I would have preferred if it came with a base gasket but used clear silicone instead. The Tram 1290 is a simple but necessary product for older mobile antenna users.

### ⭐⭐⭐⭐⭐ Excellent fit
*by G***O on 20 December 2025*

Perfect fit but the o-ring doesn't stay in, so don't count on using it. Use some dielectric grease on the NMO mount to keep all water out.

## Frequently Bought Together

- Tram 1290 NMO Rain Cap Black Heavy-Duty Plastic with O Ring Gasket for Secure Weather Protection
- Tram 1241 5 Inch NMO Magnet Mount Solid Brass Black with Gold Plated Contact Pin, 17 ft. RG58A/U Los Loss Coax
- CA-2X4SRNMO Comet CA-2X4SRNMO Mobile VHF/UHF Vertical Antenna

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-17*