archive-org.com » ORG » 7 » 70MHZ.ORG

Total: 745

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • The Four Metres Website
    but this was not granted by BNetzA However DARC will continue to work for a more permanent solution Please note To minimize the interference to from beacons it might be worthwhile considering if split operation will make sense for sked like QSOs Germany sets 4 m free Published on 27 June 2014 by Bo OZ2M Until now German operators have had access to 4 m after being granted a special permit But from 2 July 2014 the 4 m band should be free to everybody according to DARC and BNetzA However the access and further conditions have to be published in Regelungen in der Mitteilung 502 im Amtsblatt 12 2014 before any operation can take place Italy back on 4 m Published on 26 June 2014 by Bo OZ2M Thanks to Professor Piero Tognolatti of the University of Aquila Italian radio amateurs can use the 4 m band again from 23 June 2014 to 19 December 2014 The frequencies are as before 70 1 MHz 70 2 MHz and 70 3 MHz all 12 5 kHz and with max 50 W ERP No transmission within 30 km of France Switzerland Austria Slovenia and Croatia thanks to Emilio IK0OKY for the information Montenegro on 4 m since Apr 2012 Published on 19 June 2014 by Bo OZ2M Thanks to Chris PA2CHR it has now been verifed that radio amateurs operating in Montenegro have access to the 4 m band since 11 April 2012 The frequency allocation is 70 050 MHz to 70 450 MHz with a maximum of 25 W PEP and applies to license categories A and N Montenegro also accepts CEPT operation New 70 MHz CEPT Initiative by IARU Published on 19 June 2014 by Dave EI3IO I ve been appointed as an expert by IARU to mount a new 4m initiative to obtain regulatory recognition for a 70 MHz allocation in Europe CEPT A document addressing 70 MHz is currently doing the rounds for comment in Committee 5 of IARU and in National Societies The document explains the current initiative and strategy It is a two pronged approach to obtain a secondary allocation to the amateur service at 69 9 70 5 MHz in the European frequency table firstly by encouraging national societies to lobby their regulators to support such an initiative and secondly through direct liaison by IARU with the regulators of those CEPT countries which have had some form of access to the band in recent years The latter has already commenced The document contains an appendix which is intended to be a multi country and IARU proposal to the Frequency Management Working Group of CEPT which looks after the European Common Allocation ECA table The proposal is to modify the ECA and footnote EU9 The support of at least 10 administrations is required to obtain an automatic modification to the table The document will be sent for comment and hopefully support to most of the 30 countries having provided some form of access to the

    Original URL path: http://www.70mhz.org/ (2014-08-02)
    Open archived version from archive


  • The Four Metres Website
    WSPR beacons 70 100 70 250 2700 Hz Telegraphy SSB MGM 70 185 Cross band calling 70 200 CW SSB calling 70 250 MS calling 70 250 70 294 12 kHz AM FM 70 260 AM FM calling 70 270 MGM activity centre 70 294 70 500 12 kHz FM channels 12 5 kHz spacing 70 300 RTTY 70 3125 Digital communications 70 325 Digital communications 70 450 FM calling 70 4875 Digital communications Beacon list Published on 20 July 2014 by Bo OZ2M Beacon List Read More International 70 MHz allocations Published on 2 July 2014 by Bo OZ2M International 70 MHz allocations Read More Unidentified Signal Sources on 70 MHz Published on 13 August 2013 by Bo OZ2M Unidentified Signal Sources on 70 MHz by you Read More Distance records Published on 13 August 2013 by Bo OZ2M 70 MHz Distance Records Read More The NRRL 70 MHz bandplan for Norway Published on 6 November 2012 by Bo OZ2M The NRRL 70 MHz bandplan for Norway Read More The EDR bandplan for Denmark Published on 1 June 2012 by Ivan OZ7IS The EDR bandplan for Denmark from Ivan OZ7IS Read More Regular net activity on 70 MHz Published

    Original URL path: http://www.70mhz.org/index.php?categoryid=2 (2014-08-02)
    Open archived version from archive

  • The Four Metres Website

    (No additional info available in detailed archive for this subpage)
    Original URL path: /index.php?categoryid=3 (2014-08-02)


  • The Four Metres Website
    2014 by Bo OZ2M Linear Amplifiers Read More 70 MHz Equipment Published on 27 May 2011 by Allan GM4ZUK 70MHz Equipment Read More Antennas Published on 26 May 2011 by Ross G6GVI Antennas Read More Icom IC E90 Published on 26 May 2011 by Ross G6GVI Four into one will go Icom s IC E90 becomes a quad bander Read More Ascom SE550 Published on 26 May 2011 by Ross

    Original URL path: http://www.70mhz.org/index.php?categoryid=4 (2014-08-02)
    Open archived version from archive

  • The Four Metres Website
    filter on the 4 Meter website from G4CJZ and GI0GDP as well I made two photos of the modified PA with and without numbers at the places of the modifications There is plenty of room in this PA By the way Before you start take good pictures of the original PA I did not hi And while most of the radio amateurs are human like me we can make mistakes so following this description of the modification hereunder is fully at your own risk A lot of the original parts can stay in place hurrah but I removed At 2 remove the 470 pF ceramic capacitor At7 choice or remove the original 60 pF trimmer or replace it with a low loss Teflon trimmer of 60 pF At 14 14A remove the silver mica from PCB track to Ground At 17B remove the 470 pF ceramic capacitor and put a piece of wire in place or leave the 470 pF here Now a few changes No 1A cut the PCB track located under Coil 1 No 1 simple Low pass input filter 50 50 Ohm Tnx Elsie with about 20 dB attenuation of 140 MHz 4 Turns 1 3 mm CuAg 8 mm diameter long about 17 mm and at both sides 100 pF Silver mica form the coil to ground Perhaps SMD capacitors size 1206 and 50 V can also be used here No 2 60 pF low Loss trimmer Capacitor probably Teflon in series with the track at the place of the original 470 pF capacitor Remove this one No 3 60 pF Low loss trimmer Capacitor from the PCB track to ground No 4 100 nF SMD 1206 50 volts or better between ground and the Bias track to the new 10 uH coil going to the base of the PA transistor No 5A and 5B cut the track of the original PCB etched Bias coil going from the Bias Regulation to the base of the PA transistor No 5 new 10 uH coil replaces the original PCB coil made from an old ferrite choke of about 50 uH 1 5 amp by peeling 2 3 windings of No 6 A cut the PCB track under the coil at No 6 No 6 Coil 2 turn 1 3 mm CuAg 8 mm Diameter long 9 mm No 7 60 pF Trimmer Capacitor from PCB track to ground No 8 just under and beside left of No 7 a 470 pF SMD 1206 from PCB track to ground or use the removed 470 pF ceramic C Leave about 25mm PCB track between Capacitors No 7 8 and the base of the PA Transistor No 9 New collector coil 8 Turns 1 3 mm CuAg 6 5 mm diameter long 18 mm No 10 2 x 100 nF SMD 1206 and 2x 4n7 SMD 1206 50 volts Capacitors from collector coil No 9 to ground No 11a Cut the PCB track between the two sets of the original silver

    Original URL path: http://www.70mhz.org/index.php?categoryid=6 (2014-08-02)
    Open archived version from archive

  • The Four Metres Website
    1200 RSGB First 70MHz Contest SF O 19 Apr 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 13 May 0900 1200 70MHz CW Contest SF O Postcode and country mults 17 May 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 27 May 1400 1600 RSGB 70MHz Cumulatives 3 SF O RSGB Cumulative Contest 29 May 2000 2230 70MHz UKAC AO AR AL AX UK QTH Locator mults 21 Jun 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 24 Jun 1400 1600 RSGB 70MHz Cumulatives 4 SF O RSGB Cumulative Contest 7 8 Jul 1400 1400 VHF NFD Open R L M FSO FSR 70MHz from 0600 1400 See special rules at see VHFNFD 19 Jul 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 22 Jul 1000 1600 local 70MHz Trophy Contest SF SO O Postcode and country mults 31 Jul 1000 2230 70MHz UKAC AO AR AL AX UK QTH Locator mults 12 Aug 1400 1600 RSGB 70MHz Cumulatives 5 SF O RSGB Cumulative Contest 16 Aug 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 09 Sep 0900 1200 local RSGB Second 70MHz Contest SF O 20 Sep 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 23 Sep 1200 1600 Practical Wireless 70MHz Contest Low Power Open 1 point QSO QTH locator multipliers 18 Oct 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 30 Oct 1000 2230 70MHz UKAC AO AR AL AX UK QTH Locator mults 15 Nov 1900 2300 CET NAC Contest 1 point km 500 bonus points per WWL 20 Dec 1900 2300 CET NAC Contest 1 point km 500 bonus points

    Original URL path: http://www.70mhz.org/index.php?categoryid=7 (2014-08-02)
    Open archived version from archive

  • The Four Metres Website
    Sections Images Previous 1 2 3 4 5 6 7 8 9 10 Next Site maintained by Stewart GM4AFF Bo OZ2M and David G4ASR Login problems should be reported to 70mhz Webmaster The views and opinions expressed on this website

    Original URL path: http://www.70mhz.org/index.php?categoryid=8 (2014-08-02)
    Open archived version from archive

  • The Four Metres Website
    people who are QRV on the 4m band 10 link s Suppliers Suppliers who are known to offer 4m equipment 14 link s 4m Equipment 4m equipment related links 20 link s Operating on 4m These links are primarily concerned with operating 9 link s Site maintained by Stewart GM4AFF Bo OZ2M and David G4ASR Login problems should be reported to 70mhz Webmaster The views and opinions expressed on this

    Original URL path: http://www.70mhz.org/index.php?categoryid=9 (2014-08-02)
    Open archived version from archive



  •