Search found 662 matches

by glovisol
Sun Nov 18, 2018 4:42 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATHERFAX AND THE RSP DUO RECEIVER - TECHNICAL PROBLEMS The two Weatherfax programs that have been used to test the RSPduo are the SeaTTy and the Fldigi 4.0.18. Figure 4 below shows the two working side by side with equivalent quality. More details on the software later, after we have discussed tw...
by glovisol
Sun Nov 18, 2018 8:18 am
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

Hi Mike 2459,

Enabling the 'Lockout Fractional Resampler' seems to bring about a very significant improvement in image quality and imposes some changes. I still have to do some more tests before completing this thread.

Thanks again,

glovisol
by glovisol
Sat Nov 17, 2018 11:09 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

Hi Mike 2459,

Thanks for the suggestion: I was not aware of Section 11 of the manual and I shall give it a try tomorrow.

glovisol
by glovisol
Sat Nov 17, 2018 7:49 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATHERFAX AND THE RSP DUO RECEIVER - SETTING IT UP AMENDED 18/11/2018 for locking out fractional resampler (see next posts) and for larger bandwith. Here is the rationale for setting up the receiver frequency. Assuming a shift of +/- 425 Hz, we have a total shift of 850 Hz. To allow for this shift...
by glovisol
Sat Nov 17, 2018 8:59 am
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATHERFAX AND THE RSP DUO RECEIVER - BASIC INFO For completeness, some background information is necessary. The up to date list of Meteofax radio stations worldwide, with frequencies, technical data and transmission schedules, is dowloadable here in PDF form: http://www.nws.noaa.gov/os/marine/rfax...
by glovisol
Sat Nov 17, 2018 7:45 am
Forum: General
Topic: RSP RECEIVER LOW NOISE HF OPERATION WITH LONG WIRE ANTENNAS
Replies: 30
Views: 91592

Re: RSP RECEIVER LOW NOISE HF OPERATION WITH LONG WIRE ANTENNAS

NOISE FLOOR DATA FOR THE FIRST 15 NOVEMBER DAYS

Collected data for 7 and 14 MHz
by glovisol
Fri Nov 16, 2018 2:31 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATHERFAX AND THE RSP DUO RECEIVER


It took some effort to get here! The description of my labours in the following posts.
by glovisol
Fri Nov 16, 2018 2:22 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

Re: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATHERFAX AND THE RSP DUO RECEIVER The uploaded picture shows a page of my ship's log for May 30th, 2000 with a meteo chart received from the DEUTSCHER WETTERDIENST in early morning, while anchored in a bay in Northern Sardinia, waiting for a westerly storm. My forecast was:" the High on France sh...
by glovisol
Fri Nov 16, 2018 1:20 pm
Forum: General
Topic: QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER
Replies: 36
Views: 90664

QUALITY METEOFAX RECEPTION WITH THE RSP RECEIVER

WEATERFAX AND THE RSP DUO RECEIVER

Meteofax reception, with a state of the art RSP receiver and dedicated software, should be like a piece of cake nowadays....but it is not so and some effort is required, as I learned at my cost.

To the next post, for text amendment purposes.
by glovisol
Fri Nov 16, 2018 9:15 am
Forum: General
Topic: RSP RECEIVER LOW NOISE HF OPERATION WITH LONG WIRE ANTENNAS
Replies: 30
Views: 91592

Re: RSP RECEIVER LOW NOISE HF OPERATION WITH LONG WIRE ANTENNAS

NOISE FLOOR DATA FOR THE FIRST 15 NOVEMBER DAYS In this and subsequent posts I am uploading data measured 1 to 15 November. Previous data taken in October shows the noise floor increase and instability due to stormy weather in Southern Europe, which caused big damages, as reported by the Internatio...