Re: [IRCA] $200 receivers with little blue LED lights

[Michael Hawkins <downsized99@xxxxxxxxx>]

FM IBOC has killed meteor scatter chances here, as the only frequency that every seems to have any Ms is 93.1, and I have logged everything in the western US including Honolulu.  I used to get into 97.1 and 102.7, but they're dead now.  It takes extreme "West Coast" tropo (which is pathetic compared to back east) to get into IBOC-adjacents (for lack of a better term), and 50-100 KW stations that are less than 100 miles with an IBOC neighbor are non-existent until I'm at least 30 miles from the IBOC source.
   
  I find it more disruptive on FM, but as I'm typing this I'm also thinking that I have more than 1600 AM stations logged (in 38 years) which means fewer opportunities for something new.  I only have 550 or so FMs (in 3 years) so there's still a lot to conquer on FM.
   
  Mike

Russ Edmunds <wb2bjh@xxxxxxxxx> wrote:
  > 
> QUESTION: has this wider bandwidth been a detriment to FM DX to the
> extent
> that AM IBOC has been to AM DX?
> 

It hasn't at ;east in the same sense, mainly because the propagation is
very different. FM IBOC locally has wiped out numerous adjacent
channels to locals. In most of these cases, there are other stations at
100 miles or less which either singly or in pairs in opposite
directions, dominate the frequencies in question.

Strong tropo from another direction will wipe them out, and it will
largely wipe out the hiss. E skip will almost always come right through
the hiss.

What is most impacted is any ability to DX weak signals at the fringes
of reception, weaker tropo and now most meteor scatter.

For me personally, it's been a pain, but most of my DX has been E skip
for the past several years as I never had all that many frequencies pre
IBOC clear enough for meteor scatter, and as I don't get much tropo
except to the same old places South and Southeast.

While I haven't yet had time to do a bandscan on AM, I expect to lose
significant portions of the band - potentially 630-900, 990-1230, and
1490-1570 as well as a few others which are first adjacents to more
powerful nighttime locals.



Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id

FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
AM: Hammarlund HQ-150 & 4' FET air core loop



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