{"product_id":"gigahertz-solutions-hf38b-high-frequency-emf-meter-copy","title":"Gigahertz Solutions HF35C High-Frequency EMF Meter","description":"\u003ch2\u003eEasy RF Measurement for Home and Everyday Use\u003c\/h2\u003e\n\u003cp\u003eThe Gigahertz Solutions HF35C is a high-frequency EMF meter for detecting and measuring radio-frequency (RF) electromagnetic fields from 800 MHz to 2.7 GHz.\u003c\/p\u003e\n\u003cp\u003eIt combines a logarithmic-periodic (LogPer) measuring antenna with frequency-compensated RF measurement, switchable peak and average readings, and audio analysis. This makes it possible to measure the level of RF radiation present while also investigating the characteristics and direction of detected sources.\u003c\/p\u003e\n\u003cp\u003eThe HF35C is intended for practical RF measurements in homes, workplaces and other environments where mobile communications, Wi-Fi, DECT and other radio-frequency sources may be present.\u003c\/p\u003e\n\u003ch2\u003eWhat Can the HF35C Measure?\u003c\/h2\u003e\n\u003cp\u003eThe HF35C measures power flux density across a frequency range of 800 MHz to 2.7 GHz.\u003c\/p\u003e\n\u003cp\u003eThe measurement range is 0.1 to 1,999 µW\/m², with the display providing a resolution of 0.1 µW\/m².\u003c\/p\u003e\n\u003cp\u003eWithin its frequency range, the HF35C can measure RF signals from sources including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMobile radio networks\u003c\/li\u003e\n\u003cli\u003eGSM\u003c\/li\u003e\n\u003cli\u003eUMTS \/ 3G\u003c\/li\u003e\n\u003cli\u003eLTE \/ 4G\u003c\/li\u003e\n\u003cli\u003eSub-3-GHz 5G frequencies within the meter's range\u003c\/li\u003e\n\u003cli\u003eWLAN \/ Wi-Fi\u003c\/li\u003e\n\u003cli\u003eDECT cordless phones\u003c\/li\u003e\n\u003cli\u003eRadar\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HF35C does not cover the entire radio-frequency spectrum. Its specified operating range is 800 MHz–2.7 GHz, so frequencies outside this range require a different measuring instrument.\u003c\/p\u003e\n\u003ch2\u003eIdentifying RF Sources with Audio Analysis\u003c\/h2\u003e\n\u003cp\u003eThe HF35C includes an audio analysis function that can assist in identifying certain types of pulsed RF radiation.\u003c\/p\u003e\n\u003cp\u003eThe audio signal is proportional to the modulation frequency and field strength of the detected radiation. This can provide additional information alongside the numerical measurement on the display.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer gives examples including GSM, DECT and other pulsed RF sources. The audio output can help distinguish different signal characteristics when investigating an RF environment.\u003c\/p\u003e\n\u003ch2\u003eDirectional Measurement with the LogPer Antenna\u003c\/h2\u003e\n\u003cp\u003eThe HF35C uses an external logarithmic-periodic (LogPer) measuring antenna. Unlike compact RF meters with an integrated antenna, the external antenna provides directional information that can be useful when investigating the location of an RF source.\u003c\/p\u003e\n\u003cp\u003eBy changing the orientation of the antenna and observing the measured level, it is possible to investigate the direction from which a stronger RF signal is arriving.\u003c\/p\u003e\n\u003cp\u003eThe HF35C can be used for measurements both indoors and outdoors. When measuring outside, the instrument should be protected from moisture.\u003c\/p\u003e\n\u003ch2\u003eFrequency-Compensated RF Measurement\u003c\/h2\u003e\n\u003cp\u003eThe HF35C is fully frequency compensated within its specified frequency range. The manufacturer states that neither particular parts of the frequency range are deliberately over-weighted nor under-weighted or ignored.\u003c\/p\u003e\n\u003cp\u003eThe measurement technology also displays the sum of the RF radiation present at the measurement location, rather than simply selecting the strongest individual frequency.\u003c\/p\u003e\n\u003cp\u003eThis is relevant when several RF sources are present at the same time. A broadband measurement can therefore represent the combined RF field detected at the measurement location.\u003c\/p\u003e\n\u003ch2\u003ePeak and Average Measurements\u003c\/h2\u003e\n\u003cp\u003eThe HF35C provides switchable peak and average measurement.\u003c\/p\u003e\n\u003cp\u003eRF signals can vary with time, particularly when dealing with transmitting devices that operate intermittently. Having both peak and average readings available allows the user to examine the measured field in different ways.\u003c\/p\u003e\n\u003ch2\u003eSensitivity and Measurement Range\u003c\/h2\u003e\n\u003cp\u003eThe HF35C has a display resolution of 0.1 µW\/m² and a maximum displayed measurement of 1,999 µW\/m².\u003c\/p\u003e\n\u003cp\u003eThe manufacturer specifies a basic accuracy of ±6 dB including linearity error. The stated zero-point deviation and special digitising error, referred to as \"rollover\", is ±9 digits.\u003c\/p\u003e\n\u003cp\u003eThis measurement range allows the HF35C to be used for investigating relatively low RF field levels as well as higher levels within the instrument's specified range.\u003c\/p\u003e\n\u003ch2\u003eWhere Can the HF35C Be Used?\u003c\/h2\u003e\n\u003cp\u003eThe HF35C can be used to investigate high-frequency electromagnetic fields in a range of environments, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHouses and flats\u003c\/li\u003e\n\u003cli\u003eBedrooms and living areas\u003c\/li\u003e\n\u003cli\u003eOffices and workplaces\u003c\/li\u003e\n\u003cli\u003eBuildings with Wi-Fi networks\u003c\/li\u003e\n\u003cli\u003eLocations with DECT cordless phones\u003c\/li\u003e\n\u003cli\u003eAreas affected by mobile communication signals\u003c\/li\u003e\n\u003cli\u003eLocations where intermittent RF sources need to be investigated\u003c\/li\u003e\n\u003cli\u003eIndoor and outdoor environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe directional antenna is useful when the purpose of a measurement is not only to establish that RF radiation is present, but also to investigate where a stronger source may be located.\u003c\/p\u003e\n\u003cp\u003eThe HF35C can also be used to compare measurements taken at different times or before and after changes to an environment, provided that the measurement conditions are comparable.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42%; padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eFrequency range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e800 MHz - 2.7 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eMeasurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003ePower flux density\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eMeasurement range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.1 - 1,999 µW\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eBasic accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e±6 dB including linearity error\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eZero-point deviation \/ rollover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e±9 digits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eSensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eLogarithmic-periodic (LogPer) measuring antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eSignal display\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003ePeak and average values\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eAudio analysis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModulation-frequency and field-strength-proportional audio signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003ePower supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e9 V E-block alkaline manganese battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eBattery life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eApproximately 6-7 hours, depending on operating mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eLow-battery indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eAutomatic power-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; background: #fafafa;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGigahertz Solutions HF35C measuring device\u003c\/li\u003e\n\u003cli\u003ePlug-on LogPer antenna with antenna cable\u003c\/li\u003e\n\u003cli\u003e9 V alkaline manganese battery\u003c\/li\u003e\n\u003cli\u003eDetailed operating instructions with background information\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHF35C for UK RF and EMF Measurements\u003c\/h2\u003e\n\u003cp\u003eThe HF35C provides a practical way to measure high-frequency electromagnetic fields across the 800 MHz-2.7 GHz range. Its external LogPer antenna provides directional measurement capability, while frequency compensation, peak and average readings and audio analysis provide additional information when investigating RF sources.\u003c\/p\u003e\n\u003cp\u003eFor UK users, the specified frequency range covers many commonly encountered RF sources, including mobile communications, Wi-Fi, DECT and relevant Sub-3-GHz 5G frequencies that fall within the meter's operating range.\u003c\/p\u003e\n\u003cp\u003eIf you need to measure frequencies below 800 MHz or above 2.7 GHz, a meter with a different frequency range should be selected.\u003c\/p\u003e\n\u003ch2\u003eHF35C or HF38B - Which Meter Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eBoth the HF35C and \u003ca href=\"https:\/\/emfprotectionclothing.co.uk\/products\/gigahertz-solutions-hf38b-meter\/\" title=\"Gigahertz Solutions HF38B RF meter\"\u003eHF38B\u003c\/a\u003e are high-frequency RF meters with a directional LogPer antenna, frequency-compensated measurement, audio analysis, and switchable peak and average readings. The main difference is the level of sensitivity and additional measurement functions offered by the HF38B.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; margin: 20px 0;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; min-width: 620px; text-align: center;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eHF35C\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eHF38B\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eBest suited to\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eStraightforward RF evaluation and home use\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eMore detailed and sensitive RF measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eFrequency range\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e800 MHz - 2.7 GHz\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e700 MHz - 2.7 GHz\u003cbr\u003e\u003cspan style=\"font-size: 12px;\"\u003e3.3 GHz with increased tolerances\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eDisplay resolution\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.1 µW\/m²\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.01 µW\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eMaximum measurement\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e1,999 µW\/m²\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e19,990 µW\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003ePeak measurement\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eAverage measurement\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003ePeak Hold\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eAudio analysis\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eLogPer antenna\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eOptimised LogPer antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fafafa;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eBasic accuracy\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e±6 dB\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e±6 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.45 kg\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eChoose the HF35C if you want a straightforward RF meter for investigating everyday sources of high-frequency electromagnetic radiation in the home or workplace. It provides the essential measurement functions without the additional sensitivity and Peak Hold function of the HF38B.\u003c\/p\u003e\n\u003cp\u003eChoose the HF38B if you need greater sensitivity, a wider lower-frequency range, a higher maximum measurement range and Peak Hold. It is the better choice when more detailed RF measurements or comparisons are required.\u003c\/p\u003e","brand":"Gigahertz Solutions","offers":[{"title":"Default Title","offer_id":59894542631296,"sku":null,"price":285.58,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/2803\/4534\/files\/hf35c-gigahertz-solutios-emf-meter.webp?v=1789483858","url":"https:\/\/emfprotectionclothing.co.uk\/products\/gigahertz-solutions-hf38b-high-frequency-emf-meter-copy","provider":"EMF protection","version":"1.0","type":"link"}