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Re: LF: 500 opera

from [mal hamilton] [Permanent Link][Original]
To: <[email protected]>
Subject: Re: LF: 500 opera
From: "mal hamilton" <[email protected]>
Date: Tue, 31 Jan 2012 12:02:52 -0000
References: <001501cce008$8331a210$0401a8c0@xphd97xgq27nyf> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Eddie
This mode has some merit and easy to integrate into existing CW es QRSS transmitters using Class D or E amplifiers. No need for transverters or linear amps.
On a par more or less with QRSS.
I suppose the direct information read out is an advantage for some, where no morse code knowledge is necessary.
The down side would be decode or nothing whereas QRSS would produce some info in adverse propagation codx
mal/g3kev
 
----- Original Message -----
From: qrss
Sent: Tuesday, January 31, 2012 11:38 AM
Subject: Re: LF: 500 opera

OPERA (DigiMode) doing a fine job there.

Re swamping by stronger stations, I find as long as other signals are not co-channel then OPERA is amazingly robust, I can RX  and decode -25dB signals within a few Hz of my own simultaneous  transmission.

E

On 31/01/2012 11:06, mal hamilton wrote:
G3ZJO decoded and stopped at 1057 z TRACE visible during transmission. I happened to be in the shack to observe
Antenna in use 1/4 wave inv L full size 500
Strong signals when active at the same time as the weaker ones  are swamping the weaker ones.
If there was sufficient band available on 500 to accommodate all modes I would suggest QRP merchants use a different sub band to the QRO STNS
 
G3KEV
  
 

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