630m converter 300 Watts on 472kHz /630m with over current and SWR protection Kit available A broadband 5Watt linear amplifier for 136 and 475kHz Kit now available 09/2018 AMSAT Oscar 40. While 472kHz-479kHz is the range of interest for this project Aug 11, 2025 · The transmit converter consists of four main elements, input attenuator to reduce the RF power from the HF Tranciever down to a manageable level for mixing, ring mixer to mix the 10MHz LO (local Oscillator) with the transceiver RF and produce a linear output within the 630m band (472kHz-479kHz), amplification to raise the output from the ring Jan 1, 2018 · Bob/WA1OJN – First member QRV! WA1OJN’s Shack. While 472kHz-479kHz is the range of interest for this project Aug 5, 2016 · For the past several months I have been beaconing overnight on 630m WSPR mode. 92913386ft). You are currently converting Distance and Length units from Meters to Kilometers 630 Meters (m) = 0. File Converter - Convert 2000+ different audio, image, video, e-book, document, and archive conversions online. 472-10. 016666666666667 hours: 1 min = 0. Use 630 Meters to feet online conversion calculator to determine unit measurement. 630m 100-225 WATT POWER AMPLIFIER To increase power ouput to the legal limit of 5 Watts ERP a higher power amplifier was needed. Converting 630 m to ft is easy. The simplicity of the design will hopefully inspire others to join the fun on the longer wavelengths. 630 meters equal 2066. Construction takes around 6 hours to fully built and test. Feb 26, 2016 · I would also need some method of keying the PTT line of my HF transceiver, should I wish to build a 630m transmitting converter for modes such as JT9 or WSPR. 4GHz Gemini : S Band to 10m converter with 0. Here we will show you how to convert 630 meters to kilometers (630 m to km). The meter [m] to kilometer [km] conversion table and conversion steps are also listed. Here, in his own words, is his description of progress to date on 630m: The 630M receive converter is located inside the copper shielded encloser. Loop Antennas for 630 Meter TransmittingRadio old Museum | Practice with the soldering | SWL Shortwave DX Radio | Microwave | EME Ham Radio Satellite | Propagation Solar Cycle | Grid Software | Propagation prediction | Qrp low power | Telegraph Morse code | Antennas Satellite | About Rtty mode | Beacon | Band Plan Ham Radio | DX cluster software | PSK31 software | Radio portal | Amateur Apr 10, 2016 · 475kHz / 630m LF Project NotesThis article is a set of notes to contribute towards the club 475 kHz (or 630m) project. We show the work with explanation, formula, and calculation to get 630 m in km. eHam. Nov 5, 2025 · This is an online, free & easy YouTube to MP4 converter to convert YouTube to MP4 in seconds! Get quick access now for great enjoyment. The 2m Icom has no audio VOX , so to key the radio via the WSJT audio tones, I would need to build a simple VOX system that would key the PTT-line. JUMA , in Finland, offers the TX500, an extremely well engineered 60W Class D CW transmitter in kit form. The five key sections of the transverter, the 10MHz Local oscillator, the Receive Converter, the Transmit Converter, final common low pass filter and the Transverter Switching circuit have been constructed on five separate boards with the view that each of the individual sections can be upgraded with improved future designs. Introduction The purpose of this page is to describe my flexible, efficient, non-linear, transmit converter for the two newest bands allocated to amateurs: 136 kHz and 472 kHz. The receiver design incorporates a 7 pole Chebyshev filter, 7kHz wide roofing filter and a 5 pole Chebyshev filter in cascade before the double balanced, commutating mixer, fed by an ultra stable, temperature Oct 27, 2019 · A low cost, easy to build, load coil and impedence match assembly for the amateur 630m band that can re-purpose an exosting wire antenna. Bob hadn’t done any home-brew for many years and was excited by the Challenge announcement at the October meeting. 630m Band 472 to 479kHz Transverter The complete high performance 472 to 479kHz ( 630m Band ) Transverter Kit makes it ve. M to km converter with formulas, examples and step-by-step guide. 472MHz-10. . 8Vdc 15A power supply. There are a couple of 630m transmitters available on the commercial market that I know of. One unit was sent to me for beta testing and I have been ha The complete high performance 472 to 479kHz ( 630m Band ) Transverter Kit makes it very easy to get onto the 630m band especially with weak signal digital modes, but being linear it will work with all modes including SSB if it is allowed in your country. Quick, free, online unit converter that converts common units of measurement, along with 77 other converters covering an assortment of units. Antenna is a 40' vertical 300' T, and 8-200' radials. FTDX1200 HF-6M, 630M RX with homebrew TX converter for 630M + 50W amp. 80 meters in at 5 watts will put out 5 watts from 472 – 479 KHZ. I have 42 States worked, and 3 DXCC on 630M, 5 states worked on 2200M. Given an adequate 630m transmitting antenna (see Firing Up), this transverter operated barefoot should be easily heard across town during the day, and several hundred km at night. If you are interested in 630 Meters be sure to apply for authorization through the UTC for your station location. Fast and accurate results. 016666666666667 hr To convert 630 minutes into hours we have to multiply 630 by the conversion factor in order to get the time amount from minutes to hours. The site also includes a predictive tool that suggests possible conversions based on input, allowing for easier navigation while learning more about various unit systems. Will work with any radio that can be turned down to 5 watts on 80 meter band. He used two IRFP250 MOSFET's in parallel in Class D to produce 100 watts ouput with a 24 volt supply. The 630m Transverter is designed for nominal +13. Instant free online tool for meter to kilometer conversion or vice versa. 92913 Feet (ft) Visit 630 Feet to Meters Conversion Reception from near the beach Receiving VK3KHZ beacon on 630m on converter with ferrite rod. Nov 22, 2014 · A blog about amateur radio and homebrewing at VE7SL located on Mayne Island, BC. 016666666666667, which means that 1 minute is equal to 0. Also, explore tools to convert meter or kilometer to other length units or learn more about length conversions. How long is 630 meters? How far is 630 meters in miles? This simple calculator will allow you to easily convert 630 m to mi. 92913386 feet (630m = 2066. 479MHz Transverters (3) Convert 630 minutes to hours is an online tool for calculating the exact translation of 630 minutes to hours. The Transverter is designed as a transmit down, and a receive up converter, with a Oct 26, 2016 · The Monitor Sensors 630m Transverter enables any Amateur Radio Station, equipped with a conventional HF transceiver, immediate, all mode, access to the new 472-479 kHz, 630m band. 479MHz. Aug 11, 2025 · 630M band (472kHz-479kHz) Transverter. Bob was our first member QRV on 472 MHz. The 630m Transverter will operate from 10 to 16V with slightly reduced power output at 10V. Under development. Worldwide satellite communication Helix dish feed kit for 2. HOME > PROJECT > 630M TRANSVERTER > The receive converter consists of tree main elements, Low Pass Filter to mitigate strong AM broadcast band transmission over loading the receiver, a single transistor amplifier and Ring Mixer to step the 630m band (472kHz-479kHz) signals up to the 30m band frequency range of 10. 95 Showing 1 to 5 of 5 (1 Pages) What is 630 minutes in the form of hours, minutes, and seconds? Use this easy and mobile-friend calculator to convert 630 minutes to h:m:s form. Priced from $129. Simply use our calculator above, or apply the formula to change the weight 630 m to ft. Since the project potentially includes the design and build of transmitters, receivers and antenna systems members are encouraged to contribute ideas and information to this article and spawn different articles as necessary. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers”. Now active on 630/2200 meters using the TS-990 1mw out on the DRV port, into a 200 watt homebrew FET amplifier. I decided to replicate WB4JWM's design. Jan 19, 2019 · As the name implies, a transmit converter takes another frequency - such as that produced by a conventional HF transceiver - and converts it to another frequency. No software to install and free. The MF Systems 630m converter is at the far right on the top shelf. Brand new open box transverter. The 630M band offers some real technical challenges with such a long wavelength coupled with very restrictive ERP (Effective Radiated Power) limits, it is never the less a band worthy of exploration. The complete high performance 472 to 479kHz ( 630m Band ) Transverter Kit makes it very easy to get onto the 630m band especially with weak signal digital modes, but being linear it will work with all modes including SSB if it is allowed in your country. net is a Web site dedicated to ham radio (amateur radio). topics include 630m, 2200m, 6m, DX, and vintage radios. If you don’t have a suitable antenna yet, visit one of your local 630m operators to try out your new toy. The transmit converter consists of four main elements, input attenuator to reduce the RF power from the HF Tranciever down to a manageable level for mixing, ring mixer to mix the 10MHz LO (local Oscillator) with the transceiver RF and produce a linear output within the 630m band (472kHz-479kHz), amplification to raise the output from the ring mixer to a suitable level and finally the low pass How long is 630 meters? How far is 630 meters in centimeters? This simple calculator will allow you to easily convert 630 m to cm. CW Transmitters There are a number of transmitter Step-by-step conversion process to convert 630 Meters to Miles or to any other lenght units. 6dB NF Laser transmitters / Receivers - 6 pages updated LF PreAmp How long is 630 minutes? What is 630 minutes in hours? This simple calculator will allow you to easily convert 630 min to hr. Nov 22, 2014 · If you're thinking about getting something going for our new 630m band, the following web resources may be of help to you. Reviews For: Monitor Sensors TVTR1 630m Transverter Category: Transverters eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. 63 Kilometers (km) Visit 630 Kilometers to Meters Conversion Conversion formula The conversion factor from minutes to hours is 0. I've been using a new transverter designed by Roger Croft (VK4YB) and Ralph Loveday, in Queensland, Australia. Transverters (1) • VK3XDK Transverter Kit – 10 or 30m <> 630m Transverters (2) • VK1DSH Transverter design – 472-479kHz to 10. 630m to ft converter. Use table worksheet to find how many Meters equivalents in feet . We can also form a simple proportion to calculate the result: 1 min → 0. You are currently converting Distance and Length units from Meters to Feet 630 Meters (m) = 2066. 1) PCB for the 300W 630m amplifier with HEF4013 / HEF4538 and TL071 Details Printed circuit board for the amplifier with presoldered surface mount integrated circuits. pifncynmjdeelvvudeypcklrljoxbpafkrg63wmsoqffvsl7p7jeqdqt