Login Panel

Latest Articles


Web 70mhz.org

Interested in advertising here?
Over 3 million ham radio hits a year!

SV's on 4 m now
Published on 16 May 2006 by SV1DH

Since 12-May-2006 all SV HAREC level-A  and CEPT licensees are allowed to transmit on 4 m (70.20-70.25 MHz) using narrowband modes, up to 3 kHz bandwidth (i.e. no FM) for experimental purposes. The maximum output is 100 W PEP.

Active SV1 stations from Athens are: SV1OE, SV1AHX, SV1AHP, SV1DH (on SSB and CW at 25 W and 5-8 ele yagis) and few others soon. There are also some SV2s.

Hope to work you all soon

AKD 4001 back in production soon
Published on 30 April 2006 by M3SGC

According to the GAREX website, Peter Longhurst has stated that the AKD 4001 4 metre FM transceiver will soon be back in production!

Maybe this will encourage some more Foundation licensees onto the band?

LX on 4 m now
Published on 21 March 2006 by lx1jx

Very good news from Luxembourg : LX stations are now allowed to use the 4 m band on a secondary basis in the frequency segment 70.150-70.250 MHz, with 10 W erp since March 13 , 2006.

It is indeed a surprise, as last Sunday (12th March 06) during our national RL congress, our president LX1MA informed us that the talks with the authorities are still in progress. Last year I asked our Radio Society RL in March 2005 to introduce a request to our authorities. I provided our Society with a lot of information about the 4 m band as well about the licence situation in other countries. The first answer of the authorities in 2005 was negative. I provided our society very recently with some more informations about new licences in CT and 3A. In particular, the emails between Johan ON4IQ and David G4ASR (RSGB VHF Manager)  with regard to the Detailed Spectrum Investigation (DSI) conducted by the European Radiocommunications Office (ERO) on behalf of the European Radiocommunications Committee (ERC - which is part of the European Conference of Postal and Telecommunication Administrations (CEPT)). This recommended that a minimum of 100 kHz in the band 70-70.45 MHz be allocated to the amateur service on a secondary basis according to national considerations, if feasible, centred on 70.2 MHz. This information was indeed very helpful, as our RL president Armand LX1MA immediately informed our authorities with the result that we got it now in a very easy way.

Nobody is qrv in the moment. I have just received a OZ-transverter kit and will be qrv shortly. Still have no matching PA for it. So see you all on 4 m in the coming Es-season. Jacquot (Jack), LX1JX.

Monte-Carlo or bust?
Published on 1 March 2006 by G6GVI

Thanks to OZ2M, GM4AFF and G4ASR, who all sent in the following:

From Claude Passet, 3A2LF, Secretary of the IARU Society, the Association des Radiamateurs de Monaco.(A.R.M.).
New frequencies allocations for amateur radio service in Principality of Monaco, effective January 26th 2006 include:
70,000 - 70,500 MHz (4 m) (Secondary shared)

I understand that the permitted power is 100W.

4 m AM net in the Midlands
Published on 22 November 2005 by G4ZXN
We have a well established 4 m AM weekly sked here in the Midlands. Its been running now for 5 consecutive weeks and there are 6 regulars (the furthest at least 30 miles away)including myself and a couple of irregulars who appear now and then.
All are using old 70/80s recycled gear Pye Reporters Tait etc. and it is creating a bit of interest in the Forgotten Mode (don t you mean Antique Modulation? - Ed.)
We meet on 70.260. at 8pm local time on Tuesdays.

Letter from Ofcom re modified PMR equipment
Published on 12 October 2005 by G6GVI
Thanks to Rob G3XFD for passing on a letter from Alan Betts of Ofcom regarding the sale and use of converted PMR gear. It is a very detailed reply, covering EU directives, Trading Standards, Interface Requirements and the like: the full text may be viewed at www.70mhz.org/ofcom.rtf
According to Alan, any form of modification (which includes any form of reprogramming) of the original PMR equipment makes it a new radio. Intermediate and Full licensed amateurs can make their own equipment for personal use which does cover such modifications, but commercial sale or use other than by Intermediate or Full amateurs would probably constitute an offence, either of unlicensed use (by an M3) or of trading standards regulations.
However, it is possible for a competent body (having filled in all the forms and jumped through all the hoops) to issue a Declaration of Compliance for the equipment for use in the relevant Amateur band. The text and date of the Declaration provided by the equipment vendor should make this clear.
If any Foundation Licence holder is not sure of the status of their ex-PMR gar, perhaps they should put it to one side until they have got their Intermediate Licence?

No 70 MHz operation from Malta
Published on 11 October 2005 by G3XFD
Thanks to Rob G3XFD for forwarding to me some correspondance between the M.A.R.L and the Senior Technical Officer of the Maltese Wireless Telegraphy Branch.
The official's reply clearly states that "the 70 MHz band is not allocated to Amateur services, but to other services (Fixed and Mobile), it is not permissible for cross-band working by listening on 70 MHz and transmitting on another band."
And also that any application for a 70 MHz Beacon "is also not allowed."
He notes that "Our allocation is fully in line with the international tables of frequency allocations set out in the Radio Regulations of the International Telecommunication Union (ITU)"

Sad news for Maltese Amateurs, and I suppose, a warning to anyone going on holiday over there not to take any rigs which will receive on 70 MHz!

PW 70 MHz AM project
Published on 22 July 2005 by G3XFD
Tony Nailer G4CFY has completed his design work on the PW/G4CFY Mellstock 1 W 70 MHz AM transmitter. This will be published in the September 2005 issue of Practical Wireless magazine.
It's designed to encourage local working and could even be built into a little hand-held rig!
A kit will be availble from Tony G4CFY at Spectrum Communications in Dorchester.

Use of FM calling frequency
Published on 24 June 2005 by gw1mcd
Many years ago, when 4m transceivers were scarce, and most were rock-bound on 70.260, QSOs were often held on what was then the calling frequency. But the situation is different now: there are many hundreds of ex-PMR and black-box transceivers in use on the 4m FM band within the UK, and from a good site it is quite common to hear many competing QSOs on 70.450. I am sure that many other users, like myself, have to switch off their receivers, as the calling channel has become unusable.
Please remember, even if you cannot hear multiple QSOs, others can: here at 650ft ASL, it is quite normal to hear stations from Wiltshire, Somerset, and the Midlands, as well as the locals.
Almost all of the sets in use today have multiple channels, so may I request that all users QSY from 70.450 when having their natter.

Italian amateur radio 70 MHz experimental campaign
Published on by Bo, OZ2M

Following a request of Luca Ferrara IK0YYY, the Italian Ministry of Communications, in coordination with the Ministry of Defense, has reportedly authorized on July 12th 2007 an amateur radio experimental campaign on the 70 MHz band (4 m) up to December 31st 2007 (news to be officially disclosed by the recipients of the formal authorization) . Such campaign is being carried out under the technical coordination of  Piero Tognolatti I0KPT, Full Professor of the Electromagnetic Fields Group and Director of the Electrical Engineering and Information Theory Department of the University of l’Aquila.

The technical parameters are:

  • Modes: all (SSB, CW, AM, FM, RTTY, digital modes, etc.)
  • Frequencies:
  • 70.100 MHz ± 12.5 kHz
  • 70.200 MHz ± 12.5 kHz
  • 70.300 MHz ± 12.5 kHz
  • Maximum RF power: 25W EIRP
  • Operational area: the whole Italian territory except for a 30 km strip from the Austria, France and Switzerland borders
  • Antenna types: omnidirectional and directional

The experimental campaign, whose  results will be published after its conclusion, is reportedly open to all Italian radioamateurs.

A beacon transmitting on frequency 70.088 MHz (mark) with FSK modulation (500 Hz upward shift) has already been activated. This is at the very low edge of the authorized band.

We wish to express our warm thanks to the Italian Ministry of Communications (Ing. F. Troisi and Dr. A. Cascio) and to the Italian Ministry of Defense, who, despite the administrative and operational hurdles, have once more given the Italian radioamateurs a clear sign of esteem and credibility. Sincere thanks are also given to the Università of L'Aquila (Prof. P. Tognolatti) for its exquisite and effective cooperation.


Luca Ferrara IK0YYY – Antonio Vernucci I0JX