If you all have been following along, I've built, tested and demo'd at field day my Softrock Ensemble RXTX (20, 30 & 40m). Lately, I acquired a TAPR...
56491
Philip
g7jur
Jul 3, 2011 8:22 pm
As the inputs to the Delta 44 are balanced is it alright that the unused input is left flooting. Or should be connected to ground. Philip g7jur...
56492
Alan
alanzfq
Jul 3, 2011 8:29 pm
... From: "Philip Subject: [softrock40] Delta 44 interface ... I think the D44 manual says it must be grounded. 73 Alan G4ZFQ...
56493
JOHN GREUSEL
greusel...
Jul 3, 2011 8:53 pm
Chuck, I've thought about this problem too. I think the most expedient remedy would be to buy the HF Packer amp manual bandpass filter board/kit and put that...
56494
Philip
g7jur
Jul 3, 2011 9:10 pm
I should have mention its Tonys Delta 44 interface. Philip g7jur...
56495
slavikmipt
Jul 3, 2011 9:46 pm
Tried to install on different PC and OS, and concluded that it's not driver's mistake, think I have broken Attiny85. Tested synthesizer output with connected...
56496
Alan
alanzfq
Jul 4, 2011 5:00 am
... From: "Philip" Subject: [softrock40] Re: Delta 44 interface ... Then there is no such thing as a "balanced"; input. This is produced by components in the...
56497
Alan
alanzfq
Jul 4, 2011 10:18 am
... Subject: [softrock40] Re: Ensemble RX II troubles with driver "Unknown device" Windows 7 ... It could be a bad joint showing up. Check all, especially the...
56498
Adam Sampson
at_sampson
Jul 4, 2011 10:20 am
... I've thought a few times that it'd be nice to have some spare IO pins provided on the SoftRock boards for things like this -- e.g. use an ATmega328 or...
56499
Philip
g7jur
Jul 4, 2011 11:04 am
Hi Alan. Thanks for the help. Philip....
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Philip
g7jur
Jul 4, 2011 11:09 am
Have you tried booting up your PC with it already plugged into the USB socket. I have had this happen to me when using a griffen powermate. Now I have to plug...
56502
Chuck
chucklippmeier
Jul 4, 2011 12:12 pm
Lately, I've been thinking about the low pass filters that Robby calls out in his section on external coonnections in the Ensemble RXTX builders notes. Since I...
56503
Alex lee
alexle188
Jul 4, 2011 12:26 pm
Hi all, You mighht be interested in Loftur's project with an ATMEGA controller. There are several other controllers with software for LPF switching, including...
56504
JOHN GREUSEL
greusel...
Jul 4, 2011 12:53 pm
Chuck, I could be wrong but I believe the correct approach is to put filters for all bands you're going to use after the amplifier (pennywhistle) I don't think...
56505
Chuck
chucklippmeier
Jul 4, 2011 1:00 pm
John, That is where I'm trying to get to. I was just looking at the builders notes to figure out how to go about it. The Elsie results were not what I expected...
56506
Tony Parks
kb9yig
Jul 4, 2011 1:42 pm
Hi Chuck, The external LP filters are needed with the multi-band version of the RXTX Ensemble to reduce the second harmonic of the lowest band by about four dB...
56507
Vyacheslav Bazhenov
slavikmipt
Jul 4, 2011 2:12 pm
all joints are OK, tried to boot up PC without any USB devices except SDR - "Unknown device", maybe it's old firmware?...
56508
JOHN GREUSEL
greusel...
Jul 4, 2011 3:03 pm
Chuck, I was just trying to imagine a simple means of testing your filter design. If you had a antenna analyzer and another softrock receiver you could emit...
56509
Chuck
chucklippmeier
Jul 4, 2011 3:48 pm
Tony, The result being at least 43dB down: Is that because the filter drops any second harmonic 11dB but the harmonic is already less than the difference i.e....
56510
Chuck
chucklippmeier
Jul 4, 2011 3:54 pm
John, Testing for me wouldn't be a problem as I have the Signalhound Spectrum Analyzer w/ the tracking generator and a VNWA, as well as big box synthesizers...
56511
g1ivg
Jul 4, 2011 10:06 pm
Just a quick question regarding the Delta-44 Audio Card Interface Kit. Do I solder a link between the three positions marked "S" on the PCB? These are...
56512
japirkle@...
japirkle...
Jul 5, 2011 4:03 am
I am building the Ensemble RX II with the HF option. I am working on the Quadrature Clock Generator circuit and the voltages don't look right. Everything...
56513
jrutleseattle
Jul 5, 2011 6:01 am
To recap the problem from last week Ensemble RXTX . All checks ok until stage 5 RF I/O and switching stage following this build: ...
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Philip
g7jur
Jul 5, 2011 7:28 am
Hi Colin. You do not need to link them. There not conected to anything. Philip g7jur....
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Alan
alanzfq
Jul 5, 2011 8:08 am
... Subject: [softrock40] Ensemble RXTX stage 5 RF I / O voltage check failure p.28/30 of build ... current draw of 1.55 mA (way below expected) This makes no...
56516
Alan
alanzfq
Jul 5, 2011 8:10 am
... From: "G1IVG" <g1ivg@...> To: <softrock40@yahoogroups.com> Sent: Monday, July 04, 2011 10:06 PM Subject: [softrock40] Delta-44 Audio Card Interface...
56517
Alan
alanzfq
Jul 5, 2011 8:16 am
... From: <japirkle@...> To: <softrock40@yahoogroups.com> Sent: Monday, July 04, 2011 8:53 PM Subject: [softrock40] Incorrect voltage readings on U6...
56518
Tony Parks
kb9yig
Jul 5, 2011 2:03 pm
Good Morning All, I am planning on offering additional kits on my website this evening as follows: Forty Lite II Combined receiver kits Twenty 6m/4m/2m RX...
56519
ewbrnb
Jul 5, 2011 2:41 pm
Question about CFGSR, SI570 Oscillator and Rocky. Once a center frequency is setup using CFGSR does Rocky then have control of the SI570 (do I close CFGSR...
56520
Bruce Tanner
k2bet1
Jul 5, 2011 2:59 pm
Re: CFGSR... you can set an LO within Rocky using the CFGSR but it is probably easier to just edit the 'ini' file as noted earlier. Once you set an LO with...
