Re: LF: 500 opera

["mal hamilton" <g3kevmal@talktalk.net>]

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

To: rsgb_lf_group@blacksheep.org

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