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SVHFS Conference Cancellation Information
After discussion between the SVHFS Board of Directors and the 2020 Conference Committee, it was decided that the 2020 conference will be canceled and not rescheduled this year. The next SVHFS conferen
After discussion between the SVHFS Board of Directors and the 2020 Conference Committee, it was decided that the 2020 conference will be canceled and not rescheduled this year. The next SVHFS conferen
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By
Robin Midgett
· #44735
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SVHFS 2020 Conference Postponed Indefinitely
Because of the health and safety concern of our society members and the uncertainty of time of our National Emergency caused by the Corona virus pandemic, the Society’s Board of Directors elected to p
Because of the health and safety concern of our society members and the uncertainty of time of our National Emergency caused by the Corona virus pandemic, the Society’s Board of Directors elected to p
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By
Robin Midgett
· #44086
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SVHFS 2020 Registration Through April 15th
SVHFS Conference 2020 Registration...The Clock Is Ticking Pre-registration is open through April 15, 2020. Please use the registration form on the conference web page here. The 2020 Southeastern VHF S
SVHFS Conference 2020 Registration...The Clock Is Ticking Pre-registration is open through April 15, 2020. Please use the registration form on the conference web page here. The 2020 Southeastern VHF S
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By
Robin Midgett
· #43932
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[SVHFS] SVHFS Conference 2020 Registration & Call For Papers
SVHFS Conference 2020 Registration & Call For Papers The 2020 Southeastern VHF Society Conference will be held in Gainesville, Georgia on April 24-25, 2020. Gainesville, GA is approximately 60 miles n
SVHFS Conference 2020 Registration & Call For Papers The 2020 Southeastern VHF Society Conference will be held in Gainesville, Georgia on April 24-25, 2020. Gainesville, GA is approximately 60 miles n
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By
Robin Midgett
· #43092
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SVHFS 2020 Conference Announcement & Call For Papers/Presentations
The 2020 Southeastern VHF Society Conference will be held in Gainesville, Georgia on April 24-25, 2020. Gainesville, GA is approximately 60 miles north of Atlanta in EM84ch. It is about 1.5 miles from
The 2020 Southeastern VHF Society Conference will be held in Gainesville, Georgia on April 24-25, 2020. Gainesville, GA is approximately 60 miles north of Atlanta in EM84ch. It is about 1.5 miles from
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By
Robin Midgett
· #42416
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ProgRock won't program correctly
I found that the USB to serial adapter from SparkFun was the ticket to easy programming on the ProgRock. Any terminal program will provide the communications. https://www.sparkfun.com/products/12731 T
I found that the USB to serial adapter from SparkFun was the ticket to easy programming on the ProgRock. Any terminal program will provide the communications. https://www.sparkfun.com/products/12731 T
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By
Robin Midgett
· #37063
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ProgRock not working
#progrock
Great news..at least as far as working on frequency...I've finally had/taken time to build the QLG1 kit & connect it to my ProgRock. Once the QLG1 locked on GPS satellites & the 1PPS started, the Prog
Great news..at least as far as working on frequency...I've finally had/taken time to build the QLG1 kit & connect it to my ProgRock. Once the QLG1 locked on GPS satellites & the 1PPS started, the Prog
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By
Robin Midgett
· #36848
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ProgRock not working
#progrock
Great news..at least as far as working on frequency...I've finally had/taken time to build the QLG1 kit & connect it to my ProgRock. Once the QLG1 locked on GPS satellites & the 1PPS started, the Prog
Great news..at least as far as working on frequency...I've finally had/taken time to build the QLG1 kit & connect it to my ProgRock. Once the QLG1 locked on GPS satellites & the 1PPS started, the Prog
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By
Robin Midgett
· #36847
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ProgRock not working
#progrock
Sid, Alan, Is it easy enough for you to check the value of register 2 in your ProgRocks when they're on frequency, and then again when they're off frequency by whatever error you're seeing? I'm findin
Sid, Alan, Is it easy enough for you to check the value of register 2 in your ProgRocks when they're on frequency, and then again when they're off frequency by whatever error you're seeing? I'm findin
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By
Robin Midgett
· #36537
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ProgRock not working
#progrock
Hi Sid, If you read back through the email chain you'll find Hans' statement concerning 1Hz./µS latency; that's how I became informed of the factor. He did say variable latency which certainly would b
Hi Sid, If you read back through the email chain you'll find Hans' statement concerning 1Hz./µS latency; that's how I became informed of the factor. He did say variable latency which certainly would b
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By
Robin Midgett
· #36264
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ProgRock not working
#progrock
Hans & the group, An update: Exchanging the RC values on the 555 has shown that the 555 latency isn't causing the frequency error I'm experiencing. I'm now in the region of 400nS latency at the 555 st
Hans & the group, An update: Exchanging the RC values on the 555 has shown that the 555 latency isn't causing the frequency error I'm experiencing. I'm now in the region of 400nS latency at the 555 st
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By
Robin Midgett
· #36255
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ProgRock not working
#progrock
Hi Hans, The inverter & level shifter are the same stage..a simple 2N3904. The shifter is needed to bring the 2.8V logic 1PPS from the GPS to 5V logic level, and the coincidence is that it's inverted
Hi Hans, The inverter & level shifter are the same stage..a simple 2N3904. The shifter is needed to bring the 2.8V logic 1PPS from the GPS to 5V logic level, and the coincidence is that it's inverted
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By
Robin Midgett
· #36234
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ProgRock not working
#progrock
Hi Floyd, Yes, most certainly. That's the value of these email groups. I've benefited many times by this sort of participation in other groups and value the follow up very highly. Thanks, Robin Midget
Hi Floyd, Yes, most certainly. That's the value of these email groups. I've benefited many times by this sort of participation in other groups and value the follow up very highly. Thanks, Robin Midget
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By
Robin Midgett
· #36230
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ProgRock not working
#progrock
Hi Hans, Do you mean like this? :>) This morning the error at 16.686600 MHz was 14 Hz. In other words, I set register 8 to 16,686,614 to obtain a measured output of 16,686,600. Doubling that output fr
Hi Hans, Do you mean like this? :>) This morning the error at 16.686600 MHz was 14 Hz. In other words, I set register 8 to 16,686,614 to obtain a measured output of 16,686,600. Doubling that output fr
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By
Robin Midgett
· #36219
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ProgRock not working
#progrock
Hi Hans, Thanks for the response. I'd really like to understand what's causing this issue & what to do about it. Presently I have the Trimble GPS 1PPS 2.8V logic 1mS pulse driving a level shifter to a
Hi Hans, Thanks for the response. I'd really like to understand what's causing this issue & what to do about it. Presently I have the Trimble GPS 1PPS 2.8V logic 1mS pulse driving a level shifter to a
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By
Robin Midgett
· #36204
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ProgRock not working
#progrock
Hi Graham & the group, The issue Sid & I and possibly others who aren't reading the mail on this subject isn't about stability with the TCXO or OCXO. The stability with those optional oscillators is w
Hi Graham & the group, The issue Sid & I and possibly others who aren't reading the mail on this subject isn't about stability with the TCXO or OCXO. The stability with those optional oscillators is w
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By
Robin Midgett
· #36176
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prog rock ge mastr exec ii
Hi Hans, I've taken your very good recommendations into account & still no joy. Please see my reply in message # 36114. Thanks, Robin Midgett K4IDC
Hi Hans, I've taken your very good recommendations into account & still no joy. Please see my reply in message # 36114. Thanks, Robin Midgett K4IDC
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By
Robin Midgett
· #36115
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ProgRock not working
#progrock
Hello Sid & the group, Sid, you're not alone. I can't seem to get my ProgRock to be stable with GPS discipline. It is far more stable & accurate without GPS discipline; I have the standard issue cryst
Hello Sid & the group, Sid, you're not alone. I can't seem to get my ProgRock to be stable with GPS discipline. It is far more stable & accurate without GPS discipline; I have the standard issue cryst
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By
Robin Midgett
· #36114
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prog rock ge mastr exec ii
Yes indeed. Given that the LPF kits require the builder to wind the toroids and the ease of replacing or supplementing the fixed value caps with narrow value trimmers, it seems that a tuneable LPF cou
Yes indeed. Given that the LPF kits require the builder to wind the toroids and the ease of replacing or supplementing the fixed value caps with narrow value trimmers, it seems that a tuneable LPF cou
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By
Robin Midgett
· #36030
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prog rock ge mastr exec ii
Thank you. That certainly explains why my ProgRock is on an Australian walkabout without a 1PPS signal...even a sub 4 volt 1 PPS! Lovin' the learning! Thanks, Robin Midgett K4IDC
Thank you. That certainly explains why my ProgRock is on an Australian walkabout without a 1PPS signal...even a sub 4 volt 1 PPS! Lovin' the learning! Thanks, Robin Midgett K4IDC
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By
Robin Midgett
· #36027
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