{"product_id":"rf-field-strength-signal-level-meter-100-1000mhz-with-antenna","title":"RF Field Strength Signal Level Meter 100–1000 MHz + Antenna","description":"\n\u003ch2\u003eRF Field Strength \u0026amp; Signal Level Meter | 100–1000 MHz\u003c\/h2\u003e\n\u003cp\u003eAccurately measure and compare RF signal strength across a wide frequency range with this compact, passive \u003cstrong\u003eField Strength \/ Signal Level Meter\u003c\/strong\u003e. Ideal for amateur radio operators, two-way radio technicians, and RF hobbyists who need a reliable, battery-free way to evaluate transmitter output and antenna performance — right in the palm of their hand.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Frequency Coverage:\u003c\/strong\u003e Operates across 100–1000 MHz. The included antenna is optimized for 400–470 MHz; use a matched antenna for other frequency ranges to maximize sensitivity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity:\u003c\/strong\u003e Verified with an HP8921A radio test set — needle deflects from as low as -20 dBm input; full-scale at approximately -2 dBm (sensitivity varies by frequency).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Amplitude Knob:\u003c\/strong\u003e Fine-tune needle swing range to protect the meter movement and get accurate readings at any power level.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Auto Damping:\u003c\/strong\u003e Automatic buffering function prevents needle damage from sudden high-power signal bursts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Battery Required:\u003c\/strong\u003e Completely passive design — no power source needed, ever.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTesting Sensitivity by Power:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e0.1W: effective range 0.1–1 m\u003c\/li\u003e\n      \u003cli\u003e2W \/ 5W: effective range 1–3 m\u003c\/li\u003e\n      \u003cli\u003e10W: effective range 2–5 m\u003c\/li\u003e\n      \u003cli\u003e50W: extended range\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Lightweight ABS construction in a clean white finish — easy to carry to the field or workbench.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100–1000 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Antenna Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400–470 MHz (1\/4-wave recommended for other frequencies)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 dBm (needle start) to -2 dBm (full scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot required (passive device)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eBefore testing, turn the \u003cem\u003eAmplitude Adjustment\u003c\/em\u003e knob fully to the left.\u003c\/li\u003e\n  \u003cli\u003eChoose an antenna whose length corresponds to a 1\/4-wavelength of your target frequency.\u003c\/li\u003e\n  \u003cli\u003ePosition your handheld two-way radio approximately 1 meter from the meter (do not place too close — an excessively strong signal may damage the movement).\u003c\/li\u003e\n  \u003cli\u003ePress the radio's PTT button to transmit. The needle will deflect in proportion to signal strength.\u003c\/li\u003e\n  \u003cli\u003eIf the needle exceeds full scale, rotate the Amplitude Adjustment knob until the needle settles at a readable position.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eTesting Antenna Maximum Gain Point\u003c\/h3\u003e\n\u003cp\u003eConnect your two-way radio to the antenna feeder cable and place this meter near the antenna under test. Align the polarization of the meter's antenna with the antenna being tested. Transmit across multiple frequency points and record the needle readings at each. The frequency producing the highest reading indicates the antenna's optimal resonant frequency band.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e⚠ Important:\u003c\/strong\u003e This passive field strength meter is designed exclusively for testing two-way radios and RF transmitters. Do \u003cem\u003enot\u003c\/em\u003e use it to test remote controls or non-RF devices.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Field Strength \/ Signal Level Meter\u003c\/li\u003e\n  \u003cli\u003e1× Antenna (400–470 MHz optimized)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Find Useful\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/50pcs-nickel-sheets-18650-lithium-battery-spot-welding\"\u003e50Pcs Nickel Sheets for 18650 Battery Spot Welding Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/non-contact-capacitive-water-level-sensor-3v-5v\"\u003eNon-Contact Capacitive Water Level Sensor 3.3V–5V\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/molex-mini-fit-jr-4-pin-4-2mm-pitch-wire-to-board-connector-housing\"\u003eMolex Mini-Fit Jr 4-Pin 4.2mm Pitch Wire-to-Board Housing\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What frequency range does this RF field strength meter cover?\u003c\/h4\u003e\n\u003cp\u003eA: This signal level meter covers a wide range of 100–1000 MHz. The included antenna is optimized for 400–470 MHz. For best accuracy at other frequencies within the range, use a 1\/4-wavelength antenna matched to your target frequency.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this field strength meter need batteries to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a fully passive device. It requires no battery or external power source. It detects and displays RF signal strength purely through the received electromagnetic field, making it ideal for quick, hassle-free field measurements.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this meter be used to test remote controls or other RF devices?\u003c\/h4\u003e\n\u003cp\u003eA: No. This passive field strength meter is specifically designed for testing two-way radios and RF transmitters operating in the 100–1000 MHz range. It is not suitable for testing remote controls or devices outside this range.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I protect the needle movement from damage during testing?\u003c\/h4\u003e\n\u003cp\u003eA: Always start with the Amplitude Adjustment knob turned fully to the left before testing. The built-in automatic damping (buffering) function also helps prevent sudden needle over-swing. Keep the transmitter at least 1 meter away from the meter to avoid overloading the movement with an excessively strong signal.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What frequency range does this RF field strength meter cover?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This signal level meter covers a wide range of 100–1000 MHz. The included antenna is optimized for 400–470 MHz. For best accuracy at other frequencies within the range, use a 1\/4-wavelength antenna matched to your target frequency.\"}}, {\"@type\": \"Question\", \"name\": \"Does this field strength meter need batteries to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this is a fully passive device. It requires no battery or external power source. 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Keep the transmitter at least 1 meter away from the meter to avoid overloading the movement with an excessively strong signal.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/akv9zi-87.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/akv9zi-87.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"RF Field Strength Signal Level Meter 100–1000 MHz + Antenna\", \"item\": \"https:\/\/akv9zi-87.myshopify.com\/products\/rf-field-strength-signal-level-meter-100-1000mhz-with-antenna\"}]}\u003c\/script\u003e","brand":"PRIMED","offers":[{"title":"China Mainland","offer_id":41447666614336,"sku":"200007763:201336100","price":125.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/2948\/1536\/files\/Sfb24d3eb2efa4ebba6671d37f06ff412c.webp?v=1792558923","url":"https:\/\/primedgoods.com\/products\/rf-field-strength-signal-level-meter-100-1000mhz-with-antenna","provider":"PRIMED","version":"1.0","type":"link"}