Author Topic: SBFI resumed normal uplink with a new aerial  (Read 7584 times)

Offline sbfi_feeder

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SBFI resumed normal uplink with a new aerial
« on: September 03, 2005, 11:42:14 AM »
SBFI just resumed normal uplink using a quarter-wavelength groundplane antenna, tuned to 126.725, the mid-frequency of our capture range.

I kindly ask for the fellow feeders to evaluate our overall feed quality.

Cheers,

Ricardo
SBFI



Offline davolijj

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SBFI Feed
« Reply #1 on: September 03, 2005, 04:03:38 PM »
I'd like to but currently the feed is down.
Regards
JD

Offline sbfi_feeder

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SBFI resumed normal uplink with a new aerial
« Reply #2 on: September 03, 2005, 05:06:16 PM »
Sorry Davolijj, but I heard some thunders and you know Murphy's Law.. rushed to disconnect everything. I am back online now and will be as long as weather allows.

Cheers,

Ricardo
SBFI

Offline JetBlue

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SBFI resumed normal uplink with a new aerial
« Reply #3 on: September 04, 2005, 07:19:04 PM »
Don't blame you there, even a hint of a thunderstorm and the radios get disconnected.... :D
Kieran J O'Hagan
Caribbean HF Feed: http://audio.liveatc.net:8012/car_hf.m3u

Offline davolijj

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Feed sound quality
« Reply #4 on: September 04, 2005, 08:06:45 PM »
Wow, nice job.  This feed is very clear.  I feel like I'm sitting at the TRACon Sup desk patched into someone's frequency.  Nicely Done!!  :lol:
Regards
JD

Offline sbfi_feeder

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SBFI resumed normal uplink with a new aerial
« Reply #5 on: September 04, 2005, 10:34:29 PM »
Thank Davolijj. The new antenna surprised me. Audio is clearer than ever. The audio path had changed a tad too: the compressor section was bypassed, and only the gates and peak limiter are active on the Alesis 3630. I also added a passive HPF at the PRO34 output, as well as a passive clipper and BPF just before the soundcard. The PRO34 output thumps were minimized, and unneccessary high frequencies are now attenuated. The clippers allow me to maintain a constant level at my soundcard input and avoid clipping in the A/D of the soundcard, and the BPF attenuates spurious high frequency components of the audio, both present in the audio as well as those created by the clippers in action.

The GP antenna allows reception of acfts. at SARI ground, as well as acfts. in SGES ground. I still don't know why I didn't use it before !

I am pretty happy with my gear now.

Cheers all,

Ricardo
SBFI