Kevin, This sounds like a problem I encountered with my VU5K. My symptoms were:
1. While tuning the radio, RX1 would lock up. The frequency would change on the VFO and panadaptor, but nothing moved in the panadaptor. There was ofter a few spurs showing but no signals anymore. 2. All signals dropped to zero on RX1. 3. The problem only occurred when tuning. If I started the radio and Power SDR, and hardly tuned around, it continued to work fine. 4. The lockup could occur after 30 seconds or as long as 30-40 minutes. 5. RX2 continued to work fine. RX2 was set to RX1tap on the antenna selector. 6. The radio had to be power cycled to work again. The problem was a hardware one, requiring a trip to Flex. Greg and Gerald worked on the radio, and Gerald was able t reproduce and repair the radio. It has worked perfectly since then. Here are Gerald s comments. > Your radio arrived this morning and I was able to recreate the RX1 problem by > using a scanning program that tunes every 20ms. I had it set to tune 100 Hz > per step and got it to fail twice within a couple hundred kHz. I had seen > this problem in the past on RX2 but never on RX1. On RX2 it was caused by > signal reflections on the clock line for the DDS, which can be fixed by > adding a low value resistor in series. I had a 50 ohm resistor added in > series with the clock line on RX1 and ran it for 17,000 tunes without a > failure. I have set it up to run overnight tuning 10 Hz/20ms. If it runs > all night I believe that we can be confident of the fix. So I'd suggest checking with Flex on this one. It sounds like you may have the same problem. 73, Dave - N7BHC =========================================== Email: [email protected] N7BHC/B beacon FM15PA 144.291 MHz CW 50 W - 16 element horizontal pol. reports by email or phone +1 (704) 225-3928 =========================================== On Feb 26, 2011, at 12:22 PM, Ken Akin wrote: > Background - SDR 2.19 RC1, Win NT, SP 3. E6600 quad core, 4 GB, DPC > usually 92 ms, Safe Mode 1. Running SDR, FLdigi, WaveNode WN-2 monitor, > Ham Call lookup. > Rig is a Flex5000A with ATU (bypassed), 2 receivers and V/U unit. > > I normally just use RX1, I was switching between 15 and 17 meters, dropped > to 160 just to check things out. The band switch seemed to take much longer > than normal (perhaps half a second), and what looks like a broadcast AM with > digital sidebands (10 kc either side) was just above the passband in the > middle of 160. I could not tune to the station. VFO would move, the > panadapter would jump a bit but not enough to get the station into a > listenable range. Moving just the MHz position on VFO A, from 0 to 65 MHz, > the station stayed in almost the same spot (as I tuned up frequency, the > station would move down the scope perhaps 300 Hz for every MHz up). This > worked from 0 to 12 MHz, then at 13 MHz, the signal bounded back up the > scope a couple of KHz. and again moved down a bit with each until 24 MHz. > > I tried RX2, and RX2 works properly, the ham bands look like they normally > do. I can sync the VFOs, and see to completely different displays. > > I have had a couple of things that seem related before, and I expect that a > power cycle of the Flex will cure the problem for a while. I power cycled > twice last night in 6 hours, but with this event this morning which I am > playing with it trying. to figure things out. > > So, 3 questions > > 1. How can I get signals from RX2 to FLdigi? I have RX2 on the external > speakers but I it does not connect to FLdigi. > > 2. Should I fall back to 1.86? > > 3. Is this a hardware issue, how can I tell? > > Thanks, > > Ken Akin > AC0HO > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
