flintstone mop
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« Reply #25 on: April 21, 2012, 07:53:10 PM » |
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Not a clip lead in sight.........
Too much order there for me.
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Fred KC4MOP
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W3RSW
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Rick & "Roosevelt"
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« Reply #26 on: April 22, 2012, 11:21:25 AM » |
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Ich bin ein Beerlinear...  |
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RICK *W3RSW*
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KM1H
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« Reply #27 on: April 22, 2012, 11:56:07 AM » |
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Hmmm, my German ancestors must have been polluted with French blood; I find that level of neatness very disturbing  |
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Opcom
Patrick J. / KD5OEI
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« Reply #28 on: April 22, 2012, 01:15:52 PM » |
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That square 90 degree meter is where the big $ is.
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Radio Candelstein - Flagship Station of the NRK Radio Network.
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ke7trp
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« Reply #29 on: April 23, 2012, 02:44:48 PM » |
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The good thing about this rig is that it does not require a computer to run. Such devices like that are 90s designs and holdovers from Linux fans.
I like the looks but some colors are way out of hand. If Dr. Rohde worked on it, I bet it performs wonderfuly. $17K to some is like the rest of us walking over and buying a soda from a machine. Some of the R-S radios top 50,000. This might be a bargain.
C
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Tom WA3KLR
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« Reply #30 on: April 23, 2012, 07:51:52 PM » |
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The PT8000A is a no-holes barred state-of-the-art dream transceiver design.
Attached is a pdf of the block diagram from 5 years ago.
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73 de Tom WA3KLR AMI # 77 Amplitude Modulation - a force Now and for the Future!
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Patrick J. / KD5OEI
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« Reply #31 on: April 23, 2012, 08:02:44 PM » |
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Not knocking it. Just can't make full use of its specs in this somewhat noisy place.
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Radio Candelstein - Flagship Station of the NRK Radio Network.
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KM1H
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« Reply #32 on: April 23, 2012, 09:01:44 PM » |
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Thats the 2 receivers and it has 2M but no 6M. Was ist mit dem?
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WA1GFZ
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« Reply #33 on: April 23, 2012, 09:33:24 PM » |
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I'd like to see how Rob Sherwood rates it. I prefer the DSP a little closer to the antenna myself. It does have a cool preselector design.
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W1VD
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« Reply #34 on: April 23, 2012, 10:04:56 PM » |
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The 2 kHz IMD test may not go so well ...
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'Tnx Fer the Dope OM'.
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vincent
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« Reply #35 on: April 24, 2012, 06:12:57 AM » |
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This was a state of the art transceiver from the mid sixties:  |
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K6JEK
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RF in the shack
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« Reply #36 on: April 24, 2012, 10:30:38 AM » |
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This was a state of the art transceiver from the mid sixties: That's a new one for me. Were any of these things actually built? |
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WA1GFZ
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« Reply #37 on: April 24, 2012, 10:42:26 AM » |
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I'd like to have that preselector ahead of my HPSDR
Anything with a synthesizer driving a mixer is going to be an issue with 2kHz IMD. Dual conversion is even harder. Typical analog RX is doing good if you hit 80dB. Heck the synthesizer in the Racal 6830 has sidebands down only 90 dB at 2 kHz on a good day. Shoot that through a mixer and it gets worse.
I bet this is a very cool rig but the design is not current. just like the FTDX5000 which copies mil rigs of the '80s with a 40.455 kHz first IF and 455 kHz second IF. hanging a DSP on the end.
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W2VW
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« Reply #38 on: April 24, 2012, 10:55:04 AM » |
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This was a state of the art transceiver from the mid sixties: Is that Les Babcock? |
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WA1GFZ
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« Reply #39 on: April 24, 2012, 11:06:19 AM » |
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no Stinky Babcock
Hey Dave I had one of my SS amps on 75 this past weekend
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W2VW
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« Reply #41 on: April 24, 2012, 11:37:18 AM » |
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no Stinky Babcock
Hey Dave I had one of my SS amps on 75 this past weekend
The cat? Great! I used one of my SS amps to heat the shack the other day. 51v 4a 0 sig plus server switcher wastes just enough to take the edge off. Have you updated the parameters with the group? Irb would be proud. Not smug. |
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Steve - K4HX
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« Reply #42 on: April 25, 2012, 09:54:15 AM » |
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I prefer to have my IMD much wider than 2 kHz.
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WA1GFZ
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« Reply #43 on: April 25, 2012, 11:16:20 AM » |
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Heros not bad but I would like to see a higher Q. 2 of them in series with a bit of gain in the middle would be very cool. Above 15 MHz pretty wide. Maybe it doesn't matter who knows.
The design is similar to the smug front end.
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KL7OF
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« Reply #44 on: April 25, 2012, 11:42:28 AM » |
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This was a state of the art transceiver from the mid sixties: "The B-500 plate modulator is an accessory" |
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ke7trp
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« Reply #45 on: April 26, 2012, 12:06:18 AM » |
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I was looking into a solution to kill off noise and stop BCB interferance. That looked neat. Pricey yes. C Heros not bad but I would like to see a higher Q. 2 of them in series with a bit of gain in the middle would be very cool. Above 15 MHz pretty wide. Maybe it doesn't matter who knows.
The design is similar to the smug front end.
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