[hpsdr] 4 independent Rx/Tx

[Duane - N9DG]

Some of us have already setup stations with 4, or even more independent Rx/Tx band coverage using a variety of means. My current system is composed of some Hermes boards, a Metis/Mecury/Penelpe stack and a Flex-5K. All driving transverters to get full time panadapters /  waterfalls on 50, 144, 222, and 432 bands simultaneously. After running it for about a year and a half now, I can't even imagine wanting to operate the weak signal parts of those bands in any other way.

In my case running 192 kHz on each of those bands is sufficient, though on 50 MHz more than that would be useful. So the really wide coverage the Crimson offers isn't particularly important. Though I suppose if it could be setup to cover the entire 2M band for example, and feed some 'N' number of Rx audio outs, i.e. one for each FM repeater, or simplex frequency, plus some SSB signals it could be fun.

Pricing wise the Crimson isn't ridiculous. The SDR HW parts alone for my setup wasn't too far from what the Crimson is selling for. But it would require coming up with amplifiers and its associated Rx/Tx switching to get from the +10dBm region to something useful. In my case I just went with my long ago amortized transverters and brick amplifiers.

And like all SDRs, "it's only software" (the three most understated words I know of today) that is required to make it play for what we do in amateur radio land...

Duane
N9DG
--------------------------------------------
On Fri, 9/5/14, Walter Holmes <Walterh at k5wh.net> wrote:

 Subject: Re: [hpsdr] 4 independent Rx/Tx
 To: "'Tim O'Rourke'" <w4yn at earthlink.net>, "'Helmut Oeller'" <dc6ny at gmx.de>, "'Hermann'" <hvh.net at gmail.com>, hpsdr at lists.openhpsdr.org
 Date: Friday, September 5, 2014, 4:47 PM
 
 ***** High Performance
 Software Defined Radio Discussion List *****
 
 So now all we need is a
 moderate cost Transverter project to make this a reality for
 all. :)
 
 Walter/K5WH
 
 -----Original Message-----
 From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org]
 On Behalf Of Tim ORourke
 Sent: Friday,
 September 05, 2014 1:35 PM
 To: Helmut
 Oeller; 'Hermann'; hpsdr at lists.openhpsdr.org
 Subject: Re: [hpsdr] 4 independent Rx/Tx
 
 ***** High Performance
 Software Defined Radio Discussion List *****
 
 I would not give up any
 performance just to get more BW.
 Yes 2M-70cM
 would be nice for moon bounce and vhf-uhf contesting but we
 can use HP transverters with Hermes currently.
 Not keen on rack mount, maybe if my shack was
 not so cluttered and packed with STUFF I could find room for
 a rack.
 Tim W4YN
 
 
 Tim O'Rourke
 W4YN at ARRL.Net
 Low Power Amateur Radio Rocks
 Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life
 Member R/C Pilot (sort of) NRA Life Member NRA Certified
 Rifle, Pistol, Black Powder Instructor, Range Officer 
 
 
 -----Original
 Message-----
 >From: Helmut Oeller <dc6ny at gmx.de>
 >Sent: Sep 5, 2014 1:42 PM
 >To: 'Hermann' <hvh.net at gmail.com>,
 hpsdr at lists.openhpsdr.org
 >Subject: Re: [hpsdr] 4 independent Rx/Tx
 >
 >***** High Performance
 Software Defined Radio Discussion List *****
 >
 >Hi Hermann,
 >
 >I know some people,
 who would answer: Yes, we can! All hardware stuff 
 >is available, coding is your job, hi. IMO
 the more interesting question 
 >is: Do we
 need that extreme bandwidth? Ok, we can cover all HF, VHF
 and 
 >some UHF bands simultaneously, but
 is that really necessary?
 >
 >73, Helmut, DC6NY
 >



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