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RE: LF: Special Research Permits (501-504kHz) for UK Amateurs

To: <[email protected]>
Subject: RE: LF: Special Research Permits (501-504kHz) for UK Amateurs
From: "james moritz" <[email protected]>
Date: Fri, 23 Feb 2007 11:57:11 -0000
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In-reply-to: <[email protected]>
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Dear Gary, LF Group,

I suppose the more specific you are about your intentions, the more likely
Ofcom are to consider yours a well-planned application. So I intend to put
down specific modes. In my case I will put:

A1A - ordinary CW / QRSS
F1B - FSK modes like Jason and DFCW (maybe DFCW should really be F1A?)
G1B - PSK modes like PSK31 and Jason.

I will probably also specify that the maximum bandwidth of emission will be,
say, 200Hz, since this is compatible with the width of the band and other
signals in this frequency range.

As far as the ERP goes, I will go for the maximum -10dBW ERP. My
justification is that in order to do far-field field strength measurements,
one needs a reasonable field strength at a reasonable distance. -10dBW will
give you about 220uV/m at 10km, which is no more than adequate to do mobile
FS measurements reasonably easily.

By the way, is it possible to fill in and submit the form on line? As far as
I can tell, you can only download the pdf and send in a hard copy by post,
which will take a bit longer. Also, what about the tick-boxes where you
indicate "supported / not supported"? I suppose I should tick the one that
says "RSGB support"? I guess the "NoV issue" boxes are for Ofcom to

Cheers, Jim Moritz
73 de M0BMU

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Gary - G4WGT
Sent: 23 February 2007 10:34
To: [email protected]
Subject: Re: LF: Special Research Permits (501-504kHz) for UK Amateurs

Hi Jim & LF,

There has been some discussion regarding emission codes relating I presume 
to the section on the OFCOM SRP form requesting - BAND - MODE - POWER -, 
Surely it would be acceptable to answer in the box "All Permitted Modes" or 
something similar.

What do you think guys ??


Gary - G4WGT - IO83qp

----- Original Message ----- 
From: "james moritz" <[email protected]>

BTW - what are the correct emission codes for modes like PSK31 or Wolf, and
FSK / mFSK signals like DFCW and Jason?

Cheers, Jim Moritz
73 de M0BMU

----- End of Original Message ----- 

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