BSis9tjbX7s/hqdefault.jpg' alt='Build Yagi Antenna Wifi Repeater' title='Build Yagi Antenna Wifi Repeater' />Technical FAQ FUNcube Dongle. Q. What is the frequency range A. MHz, although straw poll tests on pre production units indicate that units can be stretched down to 5. MHz or so. Upper frequency limit is beyond 2,0. MHz. In testing, we have determined that there is a gap between about 1,1. MHz and 1,2. 70. MHz where the design of the local oscillator VCO, PLL and divider chain in the tuner chip dont provide seemless coverage. Q. What can the FUNcube Dongle receive A. The FUNcube Dongle has no restriction on modulation schemes it is limited only by the application program running on the host computer. As long as the signal fits within about an 8. Hz bandwidth, the FUNcube Dongle is capable of receiving the radio signal. Learn and research electronics, science, chemistry, biology, physics, math, astronomy, transistors, and much more. PORTAL to. So, for analogue reception, as well as narrow band FM and SSB, it is also possible to receive, for example, sound subcarriers for TV broadcast. Similarly for data reception, as long as a data demodulator has been written that will accept standard soundcard quadrature IQ reception, that will work too. Q. What is the bandwidth A. Hz is the quadrature sampling rate. Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEM Cheap VHFUHF Antennas Cheap. Thanks 4 the info, i did not know optus had it, but if optus so good, how come optus was the most complained phoneinternet company of 2015 lol. All around the world people are reporting wireless is affecting their health. Weve collected many smart meter health complaints and posted them here. This was a fun flight to provide a remote serial terminal on a Pi, between ground and a highaltitude balloon, using a bidirectional radio link. Once the ADCs decimation filter skirts have been taken into account, you have about 8. Hz. Q. What applications work with the FUNcube Dongle A. As well as the forthcoming FUNcube front end application, any application that understands a standard stereo soundcard configured for quadrature, or IQ, reception should work. Examples include Linrad, Spectravue, Rocky and M0. KGK. Q. What is the sensitivity A. Each unit is tested for 0. V for 1. 2d. B SINAD NBFM at 1. Build Yagi Antenna Wifi Repeater' title='Build Yagi Antenna Wifi Repeater' />MHz and 4. MHz. Q. What operating systems are compatible A. Currently Windows 2. SP4, XP 3. 2 bit, and Vista and Windows 7 3. The sound card element works with Mac OSX and Ubuntu 1. Q. Whats the difference between versionsA. There are two versions, the Base and the Pro models. The Base model is frequency restricted and designed as an entry level minimal cost device, targetted for educational outreach. The Pro model is unrestricted in its frequency coverage. Q. Can I upgrade a Base version to a Pro version A. At present, the upgrade will require a return of the device so that it can be modified to accept Pro firmware. Q. Is the firmware upgradeableA. Yes, already the devices can have their firmware upgraded in a matter of a few seconds by the user. However, Pro firmware and Base firmware are not interchangeable. Q. Do I need front end filters A. Some people have experienced front end overloading with the FCD at VHF in particular. Although there is fixed and programmable front end filtering already on the FCD, at VHF its not very selective. Typically the symptom is that it will appear deaf this is the noise floor rising due to an overloaded front end. You can see this in Spectravue as when you plug in the antenna the noise floor rises potentially several tens of d. B. Although reducing gain can help, of course innevitably this is at the expense of the units native sensitivity. At this stage it is worth pursuing external filtering options. Were working on some solutions already, but some readily available commercial solutions include Hamtronics LNP preselector, SSB Electronics SP 2. DCIs DCI 1. 45 2. H and DCI 1. 45 4. H. As these are not exactly cheap, I have been working on some ideas here that you may like to try http www. Were also investigating at a reasonably priced active no tune solution. Q. I am having trouble upgrading the firmware. What can I do A. The most reliable way to do this is from Windows. The Practice Season 1 Episode 1 Torrent more. It is essential that, after placing the unit in bootloader mode, any other software that might access the FCD is shut down before you attempt to update the firmware. Q. What support options are there A. You can email me using my Paypal email account, or alternatively there is a very active FUNcube Yahoo group that often provides answers more quicklyNew Ham Radio Equipment for International Space Station. Photo ARISS 2. 5 watt JVC Kenwood D7. GA at Hamvention 2. Credit John Brier KG4. AKVThe ARISS website reports on progress towards flying new amateur radio equipment to the International Space Station. On behalf of the ARISS International team, I am proud to announce that on Friday September 2. ARISS team submitted the Inter. Operable Radio System IORS Safety Data Package to NASA for review  Our next step in this process is the Safety Review, which is planned for November 2. Submitting this was a phenomenal accomplishment Particularly since the entire Safety Data Package was developed exclusively by our ARISS volunteerssomething we have never done before. Prior to this submittal, all safety packagesfrom Owen Garriotts in the early 1. NASA, ESA or Energia. And might I say at substantial expense. I am pleased that the ARISS team did it ourselvesAWhy is this important  Two reasons 1 This is a very major IORS milestone. We cannot get to orbit without successfully completing the safety review process and getting our hardware certified for flight. Developing the safety package exclusively with volunteers is an innovative and gutsy approach to keep costs down and get the hardware flown sooner. Otherwise we probably would have to slip launch 1 2 years while we acquired additional funding to get this done. NASA Human Spaceflight Safety Certification is a four step processPhase 0, Phase 1, Phase 2 and Phase 3. The material we submitted covers the first three of the four phases. As part of Phases 0, 1 and 2, we need to make sure NASA understands our design. And we need to show NASA that we understand all the potential hazards that our hardware systems could introduce to ISS and how we have mitigated or prevented these hazards. One example is to demonstrate to NASA that our IORS was designed with electrical wiring and circuit breakers that possess adequate features and sufficient margin to prevent an electrical shock or fire on board the ISS. Critically important stuff  The final phase Phase 3 will be complete when we have completed all testing and NASA inspection of our flight hardware and NASA deems it flight worthy. At that point the IORS will be flight certificated and we can fly  Currently we are looking to March May 2. For those not following ARISS hardware development very closely, we are developing the IORS to replace most of the on board radio hardware. It is called interoperable because it is being designed to be operated anywhere on ISS. But specifically, it will be used in the two areas with ISS Ham legacy antennas the Columbus Module and the Russian Service Module. Interoperability allows us to leverage existing ISS power cables, it can be moved between modules in the event of on orbit failures, and it supports common training and operations. We will remove the 3 watt Ericsson handheld radio system, initially certified for flight in 1. Packet moduleboth of which have recently had issuesand install a brand new, specially modified 2. JVC Kenwood D7. 10. GA radio to enable a multitude of new or improved capabilities on ISS, including voice repeater and better APRS operations. A key development is the Multi Voltage Power Supply MVPS, which interfaces with multiple electric outlet connection types on ISS and provides a multitude of power output capabilities for our current and future ARISS operations and amateur radio experimentation. It will also allow our Ham Video system to have a dedicated power outlet, eliminating the outlet sharing we have now, which shuts down Ham Video at times. This effort would not be possible without the dedication and persistence of our IORS development team of volunteers. They have been working tirelessly behind the scenes to provide an outstanding amateur radio experience for all. Our IORS development team includes Lou Mc. Fadin, W5. DID, our Chief Engineer Kerry Banke, N6. IZW, the MVPS lead designer Bob Davis, KF4. KSS, the MVPS Mechanical enclosure designer Ed Krome, K9. EK, supporting IORS thermal control and cabin noise dissipation Dave Taylor, W8. AAS, our JVC Kenwood D 7. Bob Bruninga, WB4. APR, our APRS and D 7. Shin Aota, JL1. IBD, and Phil Parton, N4. DRO for all their phenomenal support from JVC Kenwood Kenneth Ransom, N5. VHO, our operations lead and our safety package teamKen Ernandes, N2. WWD, and Gordon Scannell, KD8. COJ.   Kudos to all on a fantastic effortDesigning, building and testing the IORS is a huge undertaking and veryexpensive. We need to build ten 1. Hardware parts, development tools, fabrication, testing, and expenses to certify the IORS are expected to cost approximately 1. And the hard part i. So please consider making a donation to ARISS to take our hardware system from dream to reality. You can donate to ARISS directly through the AMSAT web site at  http www. ALL donations go directly to ARISS. Thank you for all your support to inspire, engage and educate our youth to consider wireless communications and amateur radio, and to pursue STEAM careers through our exciting human space exploration and amateur radio endeavor Ad Astra  To the Stars Sincerely,Frank H. Bauer, KA3. HDOARISS International Chair and ISS Ham Radio Principal Investigator. Source http ariss. AMSAT UK. The Alpha 9. The Alpha 9. 50. 0 is the culmination of over 4. The Alpha 9. 50. 0 is an adv. Read more. Station Genius can control 4 Square Antenna Systems Antennas Antenna Switches Band Pass Filters Beam Stacks Beverages Rotators RS 2. Devices Station. Read more. CRT 2. 00. 0 Videos 4. AM FM channel multistandard European Power 4 Watts AM FM Supply voltage 1. Volt 4 storable. Read more. Yaesu FT 8. 91 HF5. MHz 1. 00. W All Mode Transceiver FT 8. Rugged construction in an ultra compact body 6. Read more. S Units is the topic of the current August 1. ARRL The Doctor is In podcast. Listenand learnSponsored by DX Engine. Read more. You may have seen my previous video in which I reviewed the Luiton Leixen LT 8. UV 1. 0 watt mobile radio. In this episode I build an ultra por. Read more. Back in April we posted about some new products made by Japanese RTL SDR experimenter and product manufacturer Nobu. Nobus new product. Read more. Mac. Logger. DX HD is an Amateur Radio application that monitors the spots from your favourite DX Cluster for DXing, Contesting or casual rag chewing. It. Read more. Antenna Calculator The Maidenhead HF Beam Antenna is a useful utility to calculate the the Maidenhead LOCATION as well as HF Elements s. Read more. The Australian Radio Electronics School RES has made available a free 2 3 day amateur radio Foundation licence course App for Apple and Androi. Read more. Thomas Lindner, DL2. RUM, is happy to announce the availability of version 3. RUMlog. NG2. Go logger for the i. Phone and i. Pad. RUMlog. NG2. Go can be do. Read more. Sometimes the best direction to send your signal is straight up Near vertical incidence skywave, or NVIS, is a skywave radio wave propagation path th. Read more. An Isotron Antenna Solves Virtually Any Restricted Space Problem For example, a 4. Meter Isotron measures only 2. Read more. Space communication has forced the use of Circular polarization. The fundamental advantage of circular polarization is that all reflections cha.