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| To: | <[email protected]> |
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| Subject: | LF: OPERA overload? |
| From: | <[email protected]> |
| Date: | Thu, 19 Dec 2013 20:24:22 -0500 |
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GI have to take issue with your earlier comments about OPERA being immune to overload. Check out the waterfall below. I'm looking for OP8 signals out west (UT and VE7) and WE2XGR/6 running OP4 is clearly desensing the OPERA software. Sensitivity can be seen returning to normal between keyed characters. The receiving setup is a 1000' BOG (beverage on ground) > Harris RF-590 receiver > Delta 44 sound card. Receiver AGC is off and the received signal level is well below that to cause gain compression in the receiver. Likewise, the sound card is being operated well below compression/clipping levels. Weak signals do not decode under these conditions ... same as with WSPR. Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2
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