Vhf frequency counter All Function display ( Frequency,Power , SWR,FW,RW,Battery Level)Feature & Speci Jul 10, 2009 · The software is written in C and implements a frequency counter based on counting frequency pulses on a pre-set time window. 99. yes The Frequency Counter is a complex and delicate precision instrument with the following features: *High sensitivity for the VHF & UHF frequency measurement, useful for the CB amateur. Build in Frequency counter . They count the number of signal cycles over a specific period, providing accurate hertz (Hz) frequency readings. Restart the SW-102, Remove the inside battery. Verified purchase. first frequency divider component uses LB3500. 000, read 145. DMR Radio signal e frequency counter. 5dB@10MHz CH1 Connector Type: BNC Introduction of CH2: CH2 Frequency: 30MHz This include very interesting frequency areas such as 2m HAM radio, all VHF and UHF; DMR Radio signal e frequency counter. ACCURACY: +- 1 count, +- Reference time Accuracy. 8GHz Walkie Talkie 2-Way Radio Frequency Counter Jun 27, 2012 · I'd say it operates more like a VHF/UHF field strength meter than a frequency counter, did pick up signals from my WiFi, 6m, 4m, 2m and 70cm. S. Page 18: Accesing Advanced Modes Read the Frequency counter is not display or read frequency not accurate? e. Pre-Owned (1) $29. Keep the “HF/UV” switch UP. 1s Gate Time: 0. 2 FREQUENCY frequency counter, frequency Find helpful customer reviews and review ratings for ANYSECU UVF9plus 10W UHF VHF Two Way Radio with Frequency Counter Function at Amazon. Supplied as a complete with internal Li-ion battery pack, AC wal RK560 Mini Radio Frequency Counter Meter,50MHz-2. 3) If you really using the UHF antenna to check it, please try to slant your radio to the frequency counter, like the Apr 13, 2018 · Every frequency counter has some sort of input amplifier and the Internet is full of designs ranging from simple two-transistor FET amplifiers to multi-component designs often using the popular MC10116 ECL triple line receiver. When the window expires, the counting of pulses stops. You can get source code. VHF COMMUNICATIONS 3/2007 130 Radio frequency counters are essential instruments used to measure the frequency of radio signals. 1 second and 1 second. 37 on Mouser). Dimensions (WHD) 240 x 75 x 220 mm / 9. 2 out of 5 stars 86 2 offers from $3137 $ 31 37 The counter The whole counter design is based on a 16F876A PIC microcontroller. Nov 4, 2024 · High-sensitivity frequency counter for Ham Radio, CB, VHF, UHF, and DMR Radio Transceivers. 4 x 3 x An easy to build Open Source DIY kit of Frequency Counter based on PIC16F628A microcontroller. 0001Hz@10M 10s Gate Time: 0. FC-2800M Frequency Counter for Ham Radio CB - High Sensitivity with CTCCSS DCS Decoder for The VHF & UHF - CB Continuous Carrier Signal, Walkie-Talkies, DMR Radio FC-3000P Ham Radio CB Frequency Counter 27Mhz-3000Mhz - High Sensitivity with CTCCSS DCS Decoder for The VHF & UHF - CB Continuous Carrier Signal, Walkie-Talkies, DMR Radio Transceivers. Input below 0. Mcbazel Surecom SF-103 Handheld 2mHz -2. Radio is 145. › See more product details FC-2800M Frequency Counter for Ham Radio CB - High Sensitivity with CTCCSS DCS Decoder for The VHF & UHF - CB Continuous Carrier Signal, Walkie-Talkies, DMR Radio 4. The Best Thing Since Sliced Bread! MFJ-259D -- World’s most popular Antenna Analyzer just got better! Now covers super wide range -- 100 KHz-230 MHz and 2200 Meter band! Super easy to use! Set the bandswitch and tune -- just like your transceiver. VHF Frequency Counter with PC Interface – Nov 25, 2019 · onelinkmore SMA to UHF RF Coaxial Extension Converter CB Connector kit SMA PL259 SO239 VHF Crimp Coax Adapter for Ham Radio Antenna Walkie Talkie Radio Pack of 4 $9. SWR, Complexantenna Impedance and frequency are all instantly display Sep 5, 2016 · The personal website of Scott W Harden. $12. 1 TYPICAL USE 2 1. In this mode the GATE button controls the frequency counter time window. 4GHz Radio Frequency Counter with CTCSS/DCS Decoder,Portable Handheld Frequency Counter Meter,1K / 0. ) VSWR. low insertion loss (0. ”12 He observed that stealth aircraft are designed to be “invisible” to higher frequency radars like those typically used in surface-to-air missile (SAM) fire control. The LATNEX® FC-2800M hand-held frequency counter is a more practical counter, even advanced features such as field strength measurement are incorporated. GATE TIME: 0. 2) Prohibit direct access to the radio antenna output, resulting in damage to the frequency meter. com FREE DELIVERY possible on eligible purchases The same happens with the VHF input, except that it is additionally divided by 64 (or 10, user's choice) by a high speed device capable of operating to 1200MHz. 2) Then change the antenna into VHF or Dual band, as customer are using UHF antenna, but checking VHF band. 00001Hz@10M CH1 Test Speed: 11 bits/second@10MHz CH1 Power Test Range: -50dBm~+20dBm, 1M~550M@50 ohm CH1 Power Test Accuracy: 0. Frequency counter means it should count the frequency of the given signal ,for example if we give our household power signal it should show approx Frequency Counter Mode: Press the “Down” key on “SWR enter the Frequency Counter Mode. VHF & UHF frequency measurement, useful for the CB amateur Ham Radio. All function display (Frequency, Power, SWR, FW, RW, Battery Level) Specifications: Frequency range: 1025 - 525MHz Measurable power range: 1 - 120W(+-0. biz] Frequency counter based on PIC16F628 & LCD display - This is the support page for the simple frequency counter project in Homebrew, RadCom October 2006. exe, for VHF/UHF use ledxt123. W. 35/Count) Get it as soon as Thursday, Dec 19 FC-3000P Ham Radio CB Frequency Counter 27Mhz-3000Mhz - High Sensitivity with CTCCSS DCS Decoder for The VHF & UHF - CB Continuous Carrier Signal, Walkie-Talkies, DMR Radio Transceivers 4. K. Title: Frequency Counter by Mani T. 1 sec, 1 sec: Input sensitivity: Less than 50mVrms: Input impedance: HF 1MO VHF 50O: Reference time frequency: 10MHz: Reference time accuracy: 5 x 10-5 (50ppm) 0° - 40°C 1 x 10-5 (10ppm) 23°C +3°C FREQUENCY RANGE FC-5250C: 10Hz ~ 200MHz, HF: 10Hz ~ 20MHz, VHF: 10MHz ~ 200MHz. Moonraker SWR-300 VHF/UHF SWR Power Meters are compact, dual-function meters that are designed to measure the SWR of a VHF/UHF antenna system from 120-500 MHz and can also be used to measure the forward and reflected power of a VHF or UHF radio from 0. 3 decibels or less) structure allows it to be permanently connected. FREQUENCY TEST EXAMPLES: 1. 0 INTRODUCTION 2 1. Press “Up” for the backlight on or off 3. It is compact, truly pocket sized, test instrument designed for ease of use and dependable performance. VU2ITI Author: PDF by Sandeep Baruah, VU2MUE Subject: Ham Radio Projects by Tushar Baby Keywords: frequency, counter, digital, vu2iti New Listing Heathkit Digital Frequency Counter Model IM-4100 Series 04640 Wave Bands Stand. g. Meter, Power/SWR, LCD Display, Frequency Range 130 kHz to 30 MHz, Power Range 10mW to 2000 W, Auto-Ranging, UHF Female SO-239, 12 VDC, Each Part Number: MTN-SWRMETER 4. 5 W input) Maximum power: 120W Impedance: 50Ω Size: W 76 X H 77 X D35 mm. 5-100 W. *Wide measuring range up to 2. Wu claimed that the relatively low VHF-band operating frequency of his radar readily reflects off of these otherwise stealthy aircraft. Maximum measurable power range up to 120W. 5-70mhz power & s. w. Technical specification for Economy Package 5MHz Counter: Low frequency input "LF" 10Hz - 5MHz Sampling 1000ms or 100ms Resolution for 1000ms MFJ-269 1. Contribute to swharden/SWHarden. 6 GHz. 88. 5%) Input Frequency counter (min 0. Was: $39. asm) written by James Hutchby, MadLab Ltd. Professional-grade digital VHF/UHF power SWR meter and frequency counter with HF RF capabilities, designed for HAM two-way radio use. Frequency Counters • Accessories. Past 6 months. Timer 1 counts the pre-set time window. A software counter watches for the TMR0 overflow(s), and the gating is done with an-other pin (RB0) switching between input state (high-Z) which allows counting, and as an output (low-Z) which halts counting. The frequency range can be increased to the 300 MHz range, or even higher by using a prescaler. VHF: 1965: 49-Frequency Converter Drawer for 5245L Electronic Counter - 50 to 500MHz: 5257A: MW: 1969: 607: 1968 02: Transfer Oscillator for 5245L/M Counter ,05 to 18GHz - Internal 66 to 133MHz VFO: 5258A: VHF: 1967: 506-Prescaler for 5245 Counter - 1 to 200MHz - Divide by 4 - Sensitivity Down to 1mV into 50 Ohms: 525A: VHF: 1954: 3: 1954 04 The Best Thing Since Sliced Bread! MFJ-269D covers 280 KHz to 230 MHz plus the 2200 Meter band and 415 to 470 MHz -- an MFJ-269D exclusive! Includes all the features of MFJ-259D, the world’s most popular SWRAnalyzerTM plus much more! Large easy-to-read 2-line LCD display and side-by-side meters clearly display your inf Digital vhf/uhf power & swr meter & frequency counter (8 pages) Measuring Instruments Surecom SW-102HF User Manual Digital hf 1. INPUT IMPEDANCE: HF 1 M W, VHF 50 W (UHF50 Ohm) MAX INPUT VOLTAGE: Less about 10V Effective. Solutions: 1) Swtich the ATT button into left hand side . Amazon. 40 Moonraker SWR-300 VHF/UHF SWR Power Meters. For a particular signal it should show some frequency,for different signals it should show different frequency . In this mode, it will test and show the frequency of input signal source. Read honest and unbiased product reviews from our users. 5 to 71 MHz in six overlapping bands, and includes SWR measurements on 85-185MHz ,300-490 MHz. 5W; Please use menu mode and fine tune the frequency offset. This Dana 9917A 560 MHz Frequency Counter is used and in excellent condition. This was the household telephone. Feb 9, 2013 · You can get cheap frequency counters online for just a few bucks. 39 ($2. It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. This process repeats it self after the measured frequency is presented on screen. r. 6 470 MHz Frequency Counter Antenna Analyzer HF VHF UHF C MY OTHER HAM. Good resolution, 0. com development by creating an account on GitHub. Covers 27MHz-3000MHz with CTCCSS DCS decoder for continuous carrier signal and walkie-talkies. sn74lv8154 is configured in 32-bit mode (by chaining together its two 16-bit counters, see the datasheet for details) and acts as the front-end directly taking in the measured frequency. Opens in a new window or tab. 91. Report comment. 5 GHz; Prescaler : 1000 / 12 GHz; Prescaler : 1000 / 17 GHz; Prescaler : 1000 / 24 GHz Counter (Arduino) Efratom LPR101 Rubidium Frequency Standard; 10 MHz OCXO; Daramod - 10 MHz Distribution Amplifier; Function Mar 2, 2021 · BG7TBL FA-2 spec’d to work down to -20bBm up to ~5GHz, and down to -50dBm up to 550MHz —-CH1 Frequency Accuracy: 0. 001Hz@10M 1s Gate Time: 0. The next frequency divider using 74HC93. GUI Battery level; Feature & Specification: Frequency range two select : 2MHz-200MHz / 27MHz -2800MHz CTCSS/DCS Decoder Frequency counter Digital mode for DMR radio To calculate values for low frequency use ledxt123. 60MHz Frequency Meter / Counter Frequency Meter / Counter measures frequency from 10Hz to 60MHz with 10Hz resolution. May 1, 2012 · This counter features fast measurement – short measuring period, display range: 0,0 to 999,9 MHz, resolution 0,1 MHz, high input sensitivity in VHF/UHF band, over-range indication, correct rounding, reduced blinking of last digit and switchable intermediate frequency offset for use with receiver. Nov 11, 2020 · ️ PORTABLE FREQUENCY COUNTER - Frequency counter Digital mode for DMR radio. BLack or Garbled or no Display. 2 out of 5 stars 134 The SURECOM SF-103 hand-held frequency counter is a more practical counter, even advanced features such as field strength measurement are incorporated. Solutions: 1) Swtich the ATT button into left hand side. 88 was - US $39. Pre-Owned. PM-120W Digital VHF UHF 125-525Mhz Power SWR Meter and Frequency Counter - HF RF Meter HAM Two-Way Radio SO239 Connector. The operating frequency range of this unit extends from 1. This includes several peripherals but just a Matjaz Vidmar, S53MV A simple RF/Microwave frequency counter Fig 1: Block diagram of the frequency counter. GUI Battery level. The heart of this frequency counter is the PIC16F628A, with Timer 0 (TMR0) acting as the input counter. Frequency counters: Frequency range: 10Hz - 150MHz in 2 ranges: Accuracy +1 count, +reference time: Resolution: 1Hz or 10Hz: Gate time: 0. The original design used a gate time of one second which gives a count resolution of 1Hz. . meter Introduction (Note: You will damage your radio when Connecting without an Antenna and Dummy. These devices are widely used in various applications, including telecommunications, broadcasting, and electronics testing, where precise frequency measurement is crucial for Buy Anteenna TW-999BNC BNC Male Handheld Antenna Scanner Antenna (20-1300MHz) with BNC Male Connector for Scanner Radio and Frequency Counters: Radio Scanners - Amazon. 04 on mouser) and an ATMega328 microcontroller ($3. high frequency signals (HF) and very high frequency signals (VHF Jun 2, 2002 · Frequency Counter - Frequency counter with output on 7-segment display [Contact: info @ rfcandy. SW-102-UV Digital VHF/UHF Power & SWR Meter & Frequency counter VHF/UHF 125-525MHz (Max 120W) V. The first will divide the frequency by 8, and the next one so divide the frequency by 16. 2) Then change the antenna into VHF or Dual band, as customer are using UHF antenna, but checking VHF band . Feb 23, 2017 · * Auto power off 1-9minutes * Charging battery LED indicator Package Contents: 1x SF401 PLUS Frequency Counter 1x UHF Antenna 1x English User Manual 1x USB charger cable 1x USB AC adapter 100-240V Note: Steps of If Frequency Counter Cannot Check VHF Frequency 1) Swtich the ATT button into left hand side. $249. Warning: 1) Max. Configuration: LF Multiplier: 10 Hz to 25 kHz Frequency Range Opt 04A: <3 x 10 -9 /Day Oven Oscillator Aug 10, 2020 · RK560 Mini Radio Frequency Counter Meter,50MHz-2. Full extended package includes MB506 prescaler that allows to measure HF and VHF up to 250MHz. Maximum measurable power range up to 120W. Dec 1, 2020 · Computer engineer Thiery Guennou based in France has created a new Arduino compatible precision frequency counter 5 or 120 MHz. com: rf frequency counter. or Best Offer. 94 shipping Aug 20, 2016 · The frequency measuring instrument requires two components of the frequency divider. *Handheld & pocket-size instrument. 5 GHz; Prescaler : 1000 / 12 GHz; Prescaler : 1000 / 17 GHz; Prescaler : 1000 / 24 GHz Counter (Arduino) Efratom LPR101 Rubidium Frequency Standard; 10 MHz OCXO; Daramod - 10 MHz Distribution Amplifier; Function Build in Frequency counter. Counting continuous wave signal comes from Two-way Radio. Also a car remote 433MHz and remote door bell 434MHz. 2 out of 5 stars The same happens with the VHF input, except that it is additionally divided by 64 (or 10, user's choice) by a high speed device capable of operating to 1200MHz. 1 Hz min. Sep 5, 2016 · For about the cost of a latte I made a surprisingly good frequency frequency counter (which directly counts >100 MHz without dividing-down the input signal) by blending a SN74LV8154 dual 16-bit counter (which can double as a 32-bit counter, $1. CETH-60 Frequency Counter; DIY Mini VHF Frequency Display; Preamplifier; Prescaler : 1000 / 1. Jun 13, 2016 · why the hell the frequency is changing when we are changing 47k pot for same signal. R. Amazon's Choice highlights highly rated, well-priced products available to ship immediately. As a general rule the longer the time window the more accurate the frequency count. direct input signal 5Vp,p. 1996. The actual frequency counter is a combination of an internal 16 bit micro counter, and a 14 bit CMOS divider IC called a "precounter". display unit for 10 MHz ra This include very interesting frequency areas such as 2m HAM radio, all VHF and UHF. 39 $ 9 . Weight: 220 grams Battery : 3. antenna MFJ-269 Instruction Manual HF/VHF/UHF SWR Analyzer Never apply dc, or more than 5 volts peak-to-peak voltage to the FREQUENCY COUNTER INPUT BNC jack. Some ideas were taken from "Simple low-cost digital frequency meter using a PIC 16C54" (frqmeter. Forward and reflected power direct digital readout, without any calibration. 7V Li-ion Rechargeable Nov 29, 2021 · Main features: *Dual band/ Dual standby *Dual Display/ Dual PTT *Frequency Counter function (Analog) *A/B channel group operate seperately *High/Low Power switchable *87-108MHz FM Radio *Frequency/Channel Scan *Emergency alarm *English Voice guide *VOX function *Scramble function *Battery saving *Multiple Scan function *0-9 Squelch *CTCSS/DCS Sep 7, 2016 · It’s so simple! It’s entirely digital, and needs very few passive components. 5 out of 5 stars ( 40 ) MFJ-269C Instruction Manual LF/HF/VHF/UHF SWR Analyzer ii TABLE OF CONTENTS 1. Display have problem? e. ️ FREQUENCY COUNTER METER RANGE - Frequency range two select : 2MHz-200MHz / 27MHz -2800MHz. Timer 0 counts the pulses on its T0CKI pin. Buy It Now +$24. The total frequency division is 8x16 = 128. 1K. Even my old Heath-Zenith SM-2420 (0-500 MHz) only cost me $40 at a ham radio flea market. Reply. com. meter (2 pages) “counter-stealth radar. TURN ON your analyzer (It will show the power on message) 2. 003, SW-102 is not for DMR system . Problem: Frequency counter cannot check VHF frequency . Problem: Frequency counter cannot check VHF frequency. Nov 24, 2017 · UHF/VHF frequency Counter by mc12080 bfr92a will count the UHF/VHF signal Frequency and show the number of a signal on Arduino UNO Color TFT LCD need little Model: VHF Frequency Counter 220 MHz BRI 8200 - Bremi Elettronica; Parma; Shape; Tablemodel, with any shape - general. MULTIPLICATION: HF and VHF (UHF) INPUT SENSITIVITY: 10Hz ~ 200MHz 35mV. 4. (8) 8 product ratings - Radio Shack LCD RF Frequency Counter Cat # 22-306 works well with adj. The AW07A also functions as a non-precision signal source and frequency counter. Economy package intended to measure frequency input up to 5MHz. exe program. REFERENCE TIME Sep 6, 2024 · SURECOM SW-102 Digital VHF/UHF Power & SWR Meter & Frequency Counter for Radio (#272646842392) 0***s (36) - Feedback left by buyer. rmtodrpydxasfgzwvyfxxbptwlpgdxiawfikptnhhhhwrbhnst