Jump to content


  • Content Count

  • Joined

  • Last visited

Community Reputation

1 Neutral

About theoldnic

  • Rank
    10+ Post Club

Profile Fields

  • Location
    Sydney NSW
  • First Name

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Just be sure your grid inverter is working properly, it will match the "line voltage phasing" of the grid power oscillation. To input, an inverter controls input by what is required. "Pure sine wave" inverter is required (that is what laboratories use it is more controlled and even less violent oscillation than all the other AC quality outputs). Don't be fooled by True sine wave" or "sine wave" , it is effectively only square wave and You do not need "three phase" power of that being what it is the Australian power supply uses. The main problem solar has is calculating the battery drain rate and output of the generator system(s) in use y wattage. Comprehensive of wind-solar systems http://windsolarhybridaustralia.x10.mx/mainindex.html Battery resource calculator page (learn Ohms law calculation for watts/volts/Ah) (This is based on lead acid battery types of chemistries) http://windsolarhybridaustralia.x10.mx/batterycalculatorAH.html
  2. Native bee Mud crab in the Canal at Mascot NSW Beekeeping
  3. Do all the 'board rate settings'(allowed speeds) for cards on the work-stations AND servers have sufficient rates matching the "through put of the router set rate"? Are all the connections using the same protocol? Is it a VPN ? as the router crypts and can only send to machines crypted info if that info can be decoded. Do you understand port forwarding (a type of masking alias by port number assignment as simply a number translated inside to then transparently send to the server(s)) Do you need to construct a certificate for the router to commit VPN for the public and private key or does it have one built into the hardware-software read only?
  4. Try taking a look at this, there are user real world stats in it... https://www.scribd.com/document/396824710/FM-AM-Antenna-Setup-Standard-50-cm-1-8th-wave-Unit https://www.scribd.com/document/400632904/FM-AM-long-range-30-cm-housing-1-16th-wave-Antenna-unit-setup The following is PDF document with all australias stations location(transmitter) power e.t.c. https://www.acma.gov.au/-/media/Licence-Issue-and-Allocation/Publication/pdf/TVRadio_Handbook_Electronic_edition-pdf.pdf?la=en
  5. Here's a mad one for you, perhaps this material is represented as "enough" !... (bottom of the following heading below the videos - car chassis and firewall sound proofing) "Amateur , experimental classification and "plans" or "kit" built legislation" http://windsolarhybridaustralia.x10.mx/light-aircraft-ppl-vh.html
  6. I believe there are no companies whether Tecsun or Digitech or Samsung make a SW with SSB Air Band, FM, AM(MW), LW, DAB ! Recently restarted and old project to get some good FM reception and some 'AKA utility" Short Wave reception. So i bought a cheap Digitech pocket portable AM/FM/SW at the cheap end, and found no tuning dial just four buttons for scan and volume. Did well on both Short Wave and FM with a personal antenna i make for long range reception on FM , i tuck the end of the coaxial core into the portables' telescopic base at its joint. However there are always community radio stations that are difficult to reach. One particular is 100.3 FM 2MCR in Sydney a 200 watt station with its transmitter on a mount of 333 meters elevation near the village of Razorback, a distance of some 50 kilometers into the city where i listen. The small pocket sets can only quite generate its signal to being heard over the background static hiss at best. Of chance i bought a FM/DAB mono 'larger portable" (a sort of shelf radio brick shaped) and tuned in and it almost had the signal usable with the antenna attached to the portable telescopic by coax. As that is, the antenna was a success so i thought this may well be decoded much better in large radios as is generally more a point of the refinement from more stages that size allows by space. note (external antenna is able to almost properly pick up but remains with a hiss) Quite true, i obtained an AR 1946 DIGITECH LW/MW/FM/SW 1.7-29.9/DAB and the result was with the external antenna 1/8th wave i was able to simply listen to 2MCR (listed as Campbelltown Macarthur but further out). Another station, 2GGO Gosford NSW is 60Km away, it has the same problem on small sets , it can only be listened to that way with static hiss but found the large set and the mono/FM/DAB can receive it (107.7 2GGO). 2GGO is 10Kw omni-directional. NB: The portables' set antennas are quite good but cannot quite match the external antenna whether at the same level above ground. Neither for short wave, there is pick up with the external antenna and various stations day or night ca be listened in SW but not on the telescopic sets antenna. Anyone know of a high quality that has the whole list of bands?
  7. Just a quick point here, some companies just can fall foul of "pirating" if it's done well enough. Of quality, that too may be more version mix if there is any difference and the copy is legal or pirated. Too again, if the apps are actually different software sets as players, bit rates may be different for either the softwares or the output hardware decoder device as assigned by either software players.
  8. The only true problem TV antennas have is they are directional and to a lesser extent are also designed to propagate reception with a higher gain dB than an omni-directional ordinary antenna Of DAB+ or FM , EMR (Electro Magnetic Radiation) in the EMS (Electro Magnetic Spectrum) are all radio waves r.g. "visible light", simply different frequencies. An antenna is simply a material device that is reactant with EMR with a sub set of design constructed properties that give it good propagative characteristics to cause "induction" of the EMR to produce electric current. Why some antennas are stipulated for particular frequencies is one of the properties of the antenna called SWR Standing Wave Ration that has good harmonic properties for the induced voltage at the stipulated frequency. The following is a "city use antenna" that is omni-directional but may need "attenuation" to use on a tv receiver in a city, it is not constructed the normal way an omni-directional antenna is made, and is more unusual of its physics principals than a parasitic element tv antenna. https://www.scribd.com/document/400632904/FM-AM-long-range-30-cm-housing-1-16th-wave-Antenna-unit-setup This shows how different it all gets, tv antennas as most are simply made for both production and resource cost to selling performance. In short, any electric conductive piece of metal is an antenna of any frequency, but there are ways of raising the efficiency for particular frequencies (you seem like you are on the right track...).
  9. I wouldn't exactly say it was the radio , but the record player attached to the amplifier had 16 and 78 speeds , the amplifier was an open block board made of wood and aluminium that had valves not transistors that would glow from time to time with the volume alike sci fi and once in a while would go with one hell of a bang ! Then it was off to the supermarket to get some more valves in 1969 - 70. The amp was also attached to the radio section, philips was the brand most commonly used for valves.
  10. Interesting middle of the road forum to an old pass time hobby electronics and radio electronics (i came from a remote isolated inland NSW area) Apart that i am also a computer programmer and tout Java2 well learned however i have never used KVM small device systems programming of which Java is commonly used. My main area is imaging and J2EE, web CGI.
  11. Does that pre-amp rank with either of these for FM reception range (what distances for clear signal are you getting), these were specifically designed for Australian FM along with other benefits of the physics in the system ? https://www.scribd.com/document/400632904/FM-AM-long-range-30-cm-housing-1-16th-wave-Antenna-unit-setup https://www.scribd.com/document/396824710/FM-AM-Antenna-Setup-Standard-50-cm-1-8th-wave-Unit There is also a 1/4 wave version but no documentation.
  12. All very well to know which channels, but the annoyance is having to make use of this document list of broadcast stations, location and antenna type and Kw power, a map and a compass https://www.acma.gov.au/-/media/Licence-Issue-and-Allocation/Publication/pdf/TVRadio_Handbook_Electronic_edition-pdf.pdf?la=en Or you are simply back wondering why your next antenna did not operate also ! If you want to fix your reception you need to consider it may be an issue of "signal reliability" of which weather at the transmitter end is as bad as problems the receiver end can suffer but you may not be hearing or seeing it occurring !
  13. If anything is real in it, its the codec technology for the data packets, PNG and JPEG2000 along with JFIF images were made lossless compression, around 2000, 10 years later, much the same technology was being introduced in the Audio side the MP3 as a point of quality.
  14. Obsolete the multi element , try a SOTS "state of the science" omni-directional https://www.scribd.com/document/396824710/FM-AM-Antenna-Setup-Standard-50-cm-1-8th-wave-Unit Reasonably much, all frequencies and modulation system widths can be coarsely said to be possible from one antenna as too the data information scheme as DAB has being 128 bit rate CD digital audio mastering computer generated. The problem is resonance (SWR Standing Wave Ratio) in small receiver elements is massively critical to good operation for the intended purpose of frequency OR put economically, "how to operate well by tuning with the least construction resource material and thus expenditure" ! The most critical feature of an antenna is impedance (attenuation) and inductance (gain) that are usually conventionally set up by winding the aerial as a coil, HOWEVER, there are "various other ways" to cause inductance and directional discrimination of signal.
  15. Never see many people making use of the ACMA "pdf" document list of all broadcast stations in Australia. You need to use an online map to find the transmitter listing location coordinates and measure distance (Km) from your receiver. Here is its link Radio and Television Broadcasting Stations - ACMA https://www.acma.gov.au/-/media/Licence-Issue-and-Allocation/Publication/pdf/TVRadio_Handbook_Electronic_edition-pdf.pdf?la=en
  • Create New...