# Rohde & Schwarz SM300 9 kHz to 3 GHz RF Signal Generator (Pre-Owned)

# Rohde & Schwarz SM300 9 kHz to 3 GHz RF Signal Generator (Pre-Owned)

## Key Features At A Glance

-   RF frequency range of 9 kHz to 3 GHz with 0.1 Hz resolution
-   AM, FM, ϕM, and pulse analog modulation modes
-   Built-in I/Q modulator for vector modulation (requires external baseband source)
-   Level range –127 dBm to +13 dBm with 0.1 dB resolution
-   SSB phase noise <–95 dBc (1 Hz) at 1 GHz carrier, 20 kHz offset
-   Internal pulse generator plus internal 20 Hz to 80 kHz LF modulation generator
-   USB host and USB device interfaces for remote control
-   5.4-inch 320×240 TFT colour display; installable in 19-inch racks

The Rohde & Schwarz SM300 is an RF signal generator covering the 9 kHz to 3 GHz frequency range. It combines a broad scope of functions, high signal quality, and a compact design, and is positioned as a favourably priced instrument within the lower price segment of RF signal generators. An internal LF generator covering 20 Hz to 80 kHz supports modulation and standalone low-frequency output.

Its intended applications include generating precise test signals for laboratory, service, production, and quality-assurance work. Stated uses cover the provision of digitally modulated signals across the 9 kHz to 3 GHz range, signal generation and modulation for EMC measurements of components, functionality testing of components in production, and semi-automatic measurements that recall stored instrument settings at the press of a button. It is suited to both digital and analog mobile radio work as well as EMC applications.

ValueTronics stocks and holds its own inventory in a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned instrument is inspected and functionally verified in-house before it ships, while new units are supplied factory-sealed exactly as received. This lets buyers source the SM300 with confidence in both condition and availability.

## Brand Heritage

Rohde & Schwarz is a privately held German electronics company that has operated under the Rohde & Schwarz name since its founding in the 1930s, with no major corporate renaming or acquisition history.

## Product Core & Specifications

> **Important:** Maximum permissible RF power at the RF output is +36 dBm for one minute, and maximum permissible DC voltage at the RF output is 30 V.

> **Important:** Vector (I/Q) modulation requires an external baseband signal source, e.g. the R&S AM300 or R&S AFQ100A; one is not included with the base instrument.

> **Important:** Specifications are valid under the following conditions: specified environmental conditions met, calibration cycle adhered to and total calibration performed.

> Recommended pairing: the I/Q modulator requires an external baseband signal source such as the Rohde & Schwarz AM300 or AFQ100A to generate vector-modulated signals.

## About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

-   ValueTronics warranty included with this unit.
-   Functional verification included before shipment.
-   Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
-   Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 0.0 USD - 560.0 USD
- **Vendor:** Rohde & Schwarz
- **Type:** Rf Gen
- **Tags:** Manufacturers, product_manual_group_1, Product_used, RF, Rohde & Schwarz, Signal Generators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 455.00 USD | In stock |
| NIST Traceable with Full Data | 490.00 USD | In stock |
| ISO IEC 17025 Accredited | 560.00 USD | In stock |

## Images

- Rohde & Schwarz SM300 9 kHz to 3 GHz RF Signal Generator (Pre-Owned)

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> Source: [ValueTronics](https://valuetronics.com/products/sm300-rohde-schwarz-rf-generator-used)
> Updated: 2026-07-06