Re: [time-nuts] Loran C returning to a station near you...

Speaking of which, here is a typical Loran-C item the government is selling for virtually scrap prices. There are a couple of these big-boy feedthroughs in this sale alone: http://www.govliquidation.com/auction/view?id=9831977 -Doug W6DSR -Original Message- From: time-nuts

Re: [time-nuts] KS-24361 Power Module Repair

Yes, and for those hams amongst us TN's, these switchers produce copious amounts of RFI all over the HF bands. I replaced my DC/DC converters with external linears, to stop the pollution. -Doug W6DSR This particular module had +/- 15V, and +5V on board. I have never seen so many individual

Re: [time-nuts] XL-DC was Re: time-nuts Digest, Vol 127, Issue 33

In my XL-DC's case, there must have been a downconverter built into the antenna (which I don't have), but there was an upconverter in the chassis which took the IF signal from the cable, and heterodyned it back up to L-Band. I haven't fiddled-around with the upconverter, but I suspect the IF

[time-nuts] No GPS satellites

in it, perhaps placing the GPS signal from L-band to some lower frequency? I would appreciate any info the group might have... -Doug Ronald W6DSR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo

Re: [time-nuts] Austron 1250A Tuning tool

I've had the ovens apart to replace a dead 3N128 in one of my 1250As. What you are adjusting is a trimmer cap in the oscillator circuit, and if too much pressure is applied trying to engage the slot in the trimmer, it is easy to bend the trimmer off at an angle where you will never be able to

Re: [time-nuts] Austron 1250A

for more than a few minutes. They can be replaced with new cells, but I have also never seen any of my units with leaking cells. Hope that helps, -Doug Ronald W6DSR -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Ole Petter Ronningen Sent: Wednesday

Re: [time-nuts] Linear voltage regulator hints...

There exists a newer generation of linear regulators with much lower noise, designed for sensitive analog loads. Here are some representative parts. Check Analog Devices' website for other options... ADM7170/7171/7172 6.5 V, Ultra Low Noise, High PSRR, Fast Transient Response CMOS LDO Doug R.

Re: [time-nuts] Questionable question about the Lucent RFTGs

the Lucent RFTGs HPs unit cost for 68000s would have been very, very good. Add up all the instruments and laser printers (I think the controllers where parcs ?), then add the 1000's of man hours of software experience you can imagine why a 68K. On Thu, Dec 4, 2014 at 12:03 PM, Doug Ronald d

[time-nuts] Questionable question about the Lucent RFTGs

I have sort of a dumb question about the Lucent KS-24361 RFTGs. Why do you suppose there is so much compute power in these units? They have the Xilinx FPGA, and the 68000 CPU just to discipline a 5 MHz oscillator? There must be more going on with these devices than meets my eyes. Thanks

Re: [time-nuts] Lucent KS-24361 10 Mhz out success.

I may have missed this info in a previous post, but I am interested in tapping off the 5 MHz signal. I have my REF-1 apart, but don't have it powered. I will buffer the signal, and suspect the 5 MHz is available right around Q205, but it might be up around Q204 or Q203. Could someone advise me

Re: [time-nuts] Lucent KS-24361, curious observation

- ugh. Since the sync signal must go through the jumper cable, I suspect it is the 1 PPS. Anyone know, and if it is the 1 PPS, is that as ugly as I believe? -Doug Ronald -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Paul Sent: Monday, December 01

Re: [time-nuts] Lucent KS-24361, curious observation

] On Behalf Of Bob Camp Sent: Monday, December 01, 2014 3:50 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Lucent KS-24361, curious observation Importance: Low Hi On Dec 1, 2014, at 4:20 PM, Doug Ronald d...@dougronald.com wrote: I have also received mine

Re: [time-nuts] strange carrier

... -Doug, W6DSR -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Doug Ronald Sent: Thursday, November 13, 2014 3:23 PM To: time-nuts@febo.com Subject: [time-nuts] strange carrier Importance: Low I'm working on my WWVB BPSK receiver and am receiving a carrier

[time-nuts] strange carrier

location with no effect. The carrier is so stable that it seems like it must be something intentionally generated. I have not tried nulling it out with my directional antenna yet. Anyone have a clue as to what I might be receiving? Thanks, -Doug Ronald W6DSR

Re: [time-nuts] 5MHz ocxo

And should you decide to upgrade, I have two Austron 1250A standards, (which contain a 5 MHz OCXO), unused in original boxes, with service manual, for sale at just $500 each. The voltage control is +/- 5 VDC. I'm avoiding the fleabag site unless necessary... -Doug Ronald AE6SY -Original

[time-nuts] Austron 1250A

I have a virgin 5 MHz secondary frequency standard to sell. Before I go the eBay route, I thought I would post it here. Contact me off-list if interested. -Doug Ronald ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

[time-nuts] Austron 1250A

I just put a new (unused - not exactly new), Austron 1250A Crystal Frequency Standard on eBay should anyone be interested. -Doug Ronald ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman