digital

Engineer's Corner
11:13 pm
Sat November 15, 2014

TheEC: Better HD Radio for 102.7FM

Spectrum analyzer of WRNI-FM's signal, with adjustments in progress.
Credit Aaron Read RIPR

Friday night and mid-day Saturday (Nov.14 & 15) ended up being a bit of a saga for what was supposed to be a routine upgrade for our 102.7FM signal in South County.   So first off, an apology to our RIPR listeners on 102.7FM, and to MVYradio's listeners to the 96.5FM signal in Newport.  There were several dropouts, periods when RIPR was on backup transmitter (and thus 96.5 was off entirely), or when both transmitters were down.

Exactly what happened could be described as an avalanche of minutiae, but I'll lay it out as best I can.

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Engineer's Corner
2:36 pm
Thu June 12, 2014

TheEC: Logitek Audio's Mosiac Mix Board

Logitek MOSIAC mixer demo in the RIPR studio.
Credit Susan Greenhalgh RIPR

This week Frank from Logitek Audio was in town to provide RIPR with a demo of their MOSAIC mix board.  To turn a phrase, this is not your father's mix board!

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Engineer's Corner
4:58 pm
Fri January 3, 2014

TheEC: Digital "Chirps" on 88.1

PCAU cards. Left is WELH's Main STL encoder. Right is an unused spare.
Credit Aaron Read / RIPR

UPDATE (Jan.10):  Verizon sent a trio of techs today to examine the Digital Lines.  They found a splice point on a pole near the Wheeler Farm end of the circuit where water had gotten past the weatherproofing.  The splice was re-done, with fresh (and better) weatherproofing sealant applied, and a weather box placed around it.

That's likely the culprit here: the problems started during the snowstorm, so probably water got in there and expanded/contracted repeatedly as the water froze and melted.  That expansion wreaks havoc with (relatively) fragile copper telco wiring.

As of 3pm we are back on our main STL.  We've noticed the volume levels seemed to have changed somewhat with this repair, too, so we're still tweaking things.

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ORIGINAL POST (Jan.3): Ever since the hefty snowstorm and extreme cold on Thursday night, our 88.1 signal in Providence has been experiencing "digital chirps" now and then.  

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