[600MRG] By the way --- your receiving equipment

[Eric P. Nichols]

Hi Steve:

   Have you looked into building a Lock-in amplifier?   These can easily decode
QRSSS signals 60 dB below the noise floor.  And with today's hardware, it's
cheap!

Eric

sbjohnston at aol.com wrote:
>     I started listening on the 630m band with my old faithful Kenwood R-1000 and a
> BC-453 command set receiver.? I was about to make a modification of the BC-553
> to spread the band out on the dial, but I got the notion to get something
> new...
>
> I made a review of the ham transceivers and shortwave receivers manufactured in
> recent amateur memory.? While nearly all of them included a basic specification
> showing receive coverage going deep into the MF range (some into LF), nearly all of
> them had reduced performance down there.
>
> To buy a receiver that would be an improvement over the BC-453 it seemed like I was
> going to have to spend thousands for a used professional unit.? That's one of the
> reasons I splurged on a new Kenwood TS-990S transceiver - it's receiver design
> considered the LF and MF ranges worth hearing.? On transmit it covers the 137 and
> 475 kHz bands with output from the DRV port (so the rig can act as an exciter for a
> low or medium frequency amplifier).?
>
> These tx and rx characteristics look to be true of the TS-590S transceiver as well,
> judging by the info in the manual.? I haven't tried that rig but it looks to be a
> good choice for use on 630m at a more practical price than the 990.
>
> Of  all the other various "modern" transceivers and receivers on my shelves, the
> unit I found to have unexpectedly good receive performance on 630m is  the Alinco
> DX-70.??
>
>
>
>
>   Steve WD8DAS / WH2XHY
>
>  sbjohnston at aol.com
>  http://www.wd8das.net/
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-- 
Eric P. Nichols, KL7AJ
AlasKit Educational and Scientific Resources
http://alaskit.co
3763 Lyle Avenue
P.O. Box 56235
North Pole, AK 99705
(907) 488-0483