UK Foundation licence transmitting with kits

[alan alan]

Greetings all,
 
The original purpose of the UK Foundation licence 'approved
kit' rule was to limit the likelihood of a M3 (ie
Foundation) amateur transmitting out of band either by
excessive tuning range or excessive spurious.  However the
merit of allowing transmission with home-brew equipment was
recognised.  CE legislation made definition difficult, as
already observed, kits were exempt from needing a CE mark.
Early BR68/F documents simply said "approved commercial
kit".
 
Even a ready built commercial offering could transmit "out
of band" since, then 28MHz was out of band for Foundation.
However the display clearly indicated that as well as the
band edges of the other bands in a way that a kit might
not, especially if using an analogue display.  The onus
always ultimately was on the person pressing the ptt and
the aim was to give that person fair (and accurate) display
of what they were doing.
 
Now, 28MHz is permitted and dealers may modify old or
commercial PMR equipment and give the M3 a letter-headed
report of compliance to IR2028.  Actually the IR does limit
the transmitter.  If it is able to transmit outside the
specified bands then it is not 2028 compliant (unless it is
very very clear to the operator that he/she is about to do
that).  Ooops I didn't know that is not a defence.
 
Regards  73   Alan  G0HIQ




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[Geoffrey Mackenzie-Kennedy-2]

Alan G0HIQ wrote on Friday, June 15, 2007 11:52 AM :

> The original purpose of the UK Foundation licence 'approved
> kit' rule was to limit the likelihood of a M3 (ie
> Foundation) amateur transmitting out of band either by
> excessive tuning range or excessive spurious.  However the
> merit of allowing transmission with home-brew equipment was
> recognised.

_________________________________________________________


To digress a little, it is amazing ( to me anyway) how many people
regardless of licence class or country cuddle up to the top edge of their
40m band allocation when transmitting LSB, with their 'unwanted' sideband
and IMD products falling outside of the band. No doubt this happens on 80m
as well.

73,
Geoff
GM4ESD


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[Thom LaCosta]

On Fri, 15 Jun 2007, Geoffrey Mackenzie-Kennedy wrote:

>
> To digress a little, it is amazing ( to me anyway) how many people regardless
> of licence class or country cuddle up to the top edge of their 40m band
> allocation when transmitting LSB, with their 'unwanted' sideband and IMD
> products falling outside of the band. No doubt this happens on 80m as well.

Conventional wisdom that 80 and 40 are LSB bands might account for it.  After
all, if there is "no USB" when you are using LSB, you should be able to run rght
up to the edge.

I suppose the real nitpick is if the unwanted sideband and IMD products outside
of the band are within allowable limits?

Of course if folks were extra cautious, then there might be room for a cw qso up
there (g).

Thom,EIEIO
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[Geoffrey Mackenzie-Kennedy-2]

On Friday, June 15, 2007 Thom LaCosta wrote:

> I suppose the real nitpick is if the unwanted sideband and IMD products
> outside of the band are within allowable limits?

Agree, and there's the problem if some nitpicky monitoring station operator
has nothing better to do than listen out for IMD products. Nobody seems to
care if some multi carrier digital "thing" takes out 25 kHz of the band
around 7160 kHz when you guys are awake and coming through.

> Of course if folks were extra cautious, then there might be room for a cw
> qso up there (g).

I'll ignore that <g>

73,
Geoff
GM4ESD



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[Thom LaCosta]

On Fri, 15 Jun 2007, Geoffrey Mackenzie-Kennedy wrote:

>
>> Of course if folks were extra cautious, then there might be room for a cw
>> qso up there (g).
>
> I'll ignore that <g>

In the bad old days, it was quite common for a bunch of us to meet on "the other
sideband" and have CW qsos....as I recall, we would pick the frequency where the
guys with the best suppression of the unwanted sideband hung out.

Thom,EIEIO
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