Anritsu MA25100A RF Power Indicator front view showing 7/16 DIN male connector and LED indicators

Anritsu MA25100A RF Power Indicator close-up of dual LED display and self-test button on device body

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Anritsu MA25100A RF Power Indicator 400 MHz - 4.0 GHz Max Input 100W

Name: Anritsu MA25100A RF Power Indicator 400 MHz - 4.0 GHz Max Input 100W
Brand: Anritsu
SKU: 5868 7D05 ER50
Price: 63.75 GBP
Availability: OutOfStock

The Anritsu MA25100A is a compact, battery-powered RF Power Indicator that detects live RF power on connectors across 400 MHz to 4000 MHz, protecting sensitive test equipment from damage.
• Dual LED indication: Yellow LED (>+17 dBm / 50 mW) and Red LED (>+27 dBm / 500 mW)
• Withstands up to +50 dBm (100 W) max input from a 50 Ω source
• Always-on operation with field-replaceable ½ AA lithium battery

Manufacturer

Anritsu

Model

MA25100A

Condition

Used

In stock

SKU

5868 7D05

£63.75

Power sensors
RF & Microwave
RF Components

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Condition: Used

The Anritsu MA25100A RF Power Indicator is a used unit in the condition noted above. It covers 400 MHz to 4000 MHz and provides instant dual-LED indication of high-level RF presence on a connector, safeguarding downstream test instruments from excess power exposure.

Typically includes:
• Anritsu MA25100A RF Power Indicator unit

Product Overview

Condition: Used

Typically includes:
• Anritsu MA25100A RF Power Indicator unit

Manufacturer's Description

The Anritsu MA25100A is a handheld RF Power Indicator designed to detect the presence of high-level RF power on a connector before connecting sensitive measuring equipment. Operating from 400 MHz to 4000 MHz, it provides a clear visual warning via two LED thresholds. It features a 7/16 DIN male connector, is always powered on, and requires no warm-up time. A built-in self-test button verifies that internal circuits and the battery are functioning correctly. The field-replaceable battery provides years of service under normal operating conditions.

Frequency Range: 400 MHz to 4000 MHz
Yellow LED Threshold: >+17 dBm (50 mW) ±3 dB, typical
Red LED Threshold: >+27 dBm (500 mW) ±3 dB, typical
Maximum Input Power: +50 dBm (100 W)
Source Impedance: 50 Ω
Connector: DIN 7/16 (m), 50 Ω
Self-Test: Button activates both Yellow and Red LEDs simultaneously
Battery: ½ AA Lithium, 3.6 V (Type ER14252), field-replaceable
Weight: 170 g (6 oz)
Length: 125 mm (4.9 in)
Diameter: 22 mm (0.9 in)
Note: The MA25100A has a very high VSWR and should not be used as a 50 Ω termination.

Resources

Anritsu MA25100A RF Power Indicator Technical Data Sheet (Rev. B) — official Anritsu CDN: Download PDF

Anritsu MA25100A RF Power Indicator Technical Data Sheet — Talley mirror copy: Download PDF

Anritsu MA25100A RF Power Indicator Datasheet — RF Com UK copy: Download PDF

Shipping & Returns

Shipping & Returns Policy

Shipping Policy

Processing Time: Orders are typically processed and dispatched within 1 business day.
Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
Shipping Destinations: We ship worldwide.
Tracking: Once your order is shipped, we will provide you with a tracking number via email.
Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

Return Period: In the event of an item being received which is not as specified, you can return your purchase within 14 days of delivery.
Condition of Items: Items must be returned unused and in their original packaging.
Return Method: All returns must be notified in writing to hello@ttinstruments.com, and the email should include the order number, date and reason for return within 14 days of delivery.
Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than not as specified.
Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is not as specified, in which case we will arrange a prepaid return label.

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Shipping & Returns

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Frequently Asked Questions

The price is too high, can I make an offer on this product?

Yes, we accept offers on most of our products. You can send us an offer by contacting us.

Are there any defects with the items you sell?

The equipment we sell will normally be used and so it is essential you carefully read the description and review the images, if there are any cosmetic defects or otherwise we will Cleary state this within the description and display it in the images.

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. Most orders are delivered within one week.

How long will it take to get my orders?

UK: 1-2 working days
Mainland Europe, US & Canada : 2-3 working days
Rest of the world: 5 working days

Subject to customs

Please refer to our detailed shipping policy.

How does customs work?

Orders may be subject to import taxes/duties. You'll need to check local authorities for accurate information on this.

What is your return policy on used equipment?

Most of our products are eligible for a 14 day return period from delivery date. (if the product is not as described).

Please refer to our detailed shipping and returns policy.

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Anritsu MA25100A RF Power Indicator 400 MHz - 4.0 GHz Max Input 100W