setting up to upload and download new files to the radio with Arduino 1.8.2
I messed up and erased my program and have a blank screen can some one help me setup my program so I can bring my radio back to life again. Trying to locate the files in the group but can't find them. If someone has the files and e-mail them to me would really help and instructions to setup the program to talk to the radio. Thanks I'm new at this ??
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Re: Birdie at 7199 - a surprising observation!
Increase the VFO drive level.
Raj
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At 31-03-2017, you wrote: I seem to have less birdies with a high side vfo at 19 MHz but I feel like I lost some sensitivity. How about the bfo, does anyone know if it should be driven more than 2ma? Guess I can test this out.
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Let us try to feed both 12V? &? ground to the raduino, thro a noise suppressing toroidal choke with 10uF caps on either side close to the readuino pcb.
I suppose it should help ?sarma ?vu3zmv
On Fri, Mar 31, 2017 at 5:24 AM, Allard PE1NWL <pe1nwl@...> wrote: Terry,
yes I did all that too and it cured the clicks then.
But now, when I use the latest library v2.0.3 the clicks are back again.
So the obvious things don't seem to work anymore with the latest library.
Have you tried the latest library already?
73, Allard PE1NWL
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Re: Birdie at 7199 - a surprising observation!
I seem to have less birdies with a high side vfo at 19 MHz but I feel like I lost some sensitivity. How about the bfo, does anyone know if it should be driven more than 2ma? Guess I can test this out.
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Re: State of the EEPROM After a Download
I'm pretty sure that a "virgin" Nano's EEPROM has each memory cell set to 255. The EEPROM is unaffected by an IDE upload, unless the program changes the EEPROM memory.
Jack, W8TEE
From: "jmlynesjr@..." <jmlynesjr@...>
To: [email protected]
Sent: Thursday, March 30, 2017 7:25 PM
Subject: [BITX20] State of the EEPROM After a Download
Does anyone know the state of the EEPROM after a new program is downloaded? Erased or left alone? i.e. is the calibration factor clobbered? What's the value of EEPROM cells 0-3 before calibaration is done for the first time?
Thanks, James KE4MIQ
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Re: Birdie at 7199 - a surprising observation!
I just tested this.? I still had the birdie at 4ma, but it wasn't as loud as 2. ?6 and 8ma were much louder than 2 or 4.
73, Ben KE0KKM
On Thu, Mar 30, 2017 at 6:49 PM, Allard PE1NWL <pe1nwl@...> wrote: As has been discussed in several earlier threads, many of us suffer from an extremely strong birdie at 7199 kHz.
Today, while experimenting with the VFO drive strength, I had a surprising observation: By default the VFO drive strength is 2 mA.
I increased the drive strength by adding the following line to the setup() routine: si5351.drive_strength(SI5351_CLK2, SI5351_DRIVE_4MA);
Then the birdie at 7199 completely disappeared! So far I haven't noticed any other negative side effects on the receiver. Can other BITX40 users perhaps try this too and share the results please? You can try other drive strength values too (accepted values are 2, 4, 6, 8 mA)
If this is indeed a good fix then we may have to include this in the standard Raduino code,
73, Allard PE1NWL
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Came too late for the party! At 0045 UTC heard a ragchew on 7195 KHz. Dropped down to 7193 KHz only to hear another ragchew. ? QTH: Greenwood, Maine ANT: Home made 40 Meter inverted-V wire dipole @ 39 feet high center drops to 20 feet each end. I hope we'll try again soon.
On Thursday, March 30, 2017 8:23 PM, John Smith via Groups.Io <johnlinux77@...> wrote:
This is KG5KYJ in Oklahoma City, I copy N5YAV Darwin Phillips Corinth, MS for relay, RST 45. Net control in Florida, barely audible, not quite intelligible. Everyone else too weak to make out so far.
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I guess it's over. It's just two guys rag chewing now. Not QRP. I heard my neighbor W5OU calling CQ too.
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Dang conditions were horrible. I heard Gordon W5OU but he could not hear me. Not sure if he was trying for the net or passing by. I pulled up the sdr in NJ and heard KM4OUS as well but that's cheating :)
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This is KG5KYJ in Oklahoma City, I copy N5YAV Darwin Phillips Corinth, MS for relay, RST 45. Net control in Florida, barely audible, not quite intelligible. Everyone else too weak to make out so far.
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I am listening, and I have been calling for the last 20 minutes, but nothing yet!
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I like the idea - I'm listening right now (0011 UTC) and I don't hear anything. I'm in the Reno, NV area, running an OCF 40m dipole at about 25 ft., and an IC-718. Propagation is pretty bad right now, as I can't hear much anywhere on 40m.
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listening thru webssr still waiting on my bitx to come. where is the net controller located?
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I like the idea - I'm listening right now (0011 UTC) and I don't hear anything. I'm in the Reno, NV area, running an OCF 40m dipole at about 25 ft., and an IC-718. Propagation is pretty bad right now, as I can't hear much anywhere on 40m.
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Re: Birdie at 7199 - a surprising observation!
Should the SI5351 drive be 8ma. As far as I understand from several sources, diodes need to be driven hard.
73
Ken VA3ABN
On Thu, Mar 30, 2017 at 7:49 PM, Allard PE1NWL <pe1nwl@...> wrote: As has been discussed in several earlier threads, many of us suffer from an extremely strong birdie at 7199 kHz.
Today, while experimenting with the VFO drive strength, I had a surprising observation: By default the VFO drive strength is 2 mA.
I increased the drive strength by adding the following line to the setup() routine: si5351.drive_strength(SI5351_CLK2, SI5351_DRIVE_4MA);
Then the birdie at 7199 completely disappeared! So far I haven't noticed any other negative side effects on the receiver. Can other BITX40 users perhaps try this too and share the results please? You can try other drive strength values too (accepted values are 2, 4, 6, 8 mA)
If this is indeed a good fix then we may have to include this in the standard Raduino code,
73, Allard PE1NWL
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Terry,
yes I did all that too and it cured the clicks then.
But now, when I use the latest library v2.0.3 the clicks are back again.
So the obvious things don't seem to work anymore with the latest library.
Have you tried the latest library already?
73, Allard PE1NWL
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I'll try to be on next week. ?Unfortunately I'll have to miss tonight. ?
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Birdie at 7199 - a surprising observation!
As has been discussed in several earlier threads, many of us suffer from an extremely strong birdie at 7199 kHz.
Today, while experimenting with the VFO drive strength, I had a surprising observation: By default the VFO drive strength is 2 mA.
I increased the drive strength by adding the following line to the setup() routine: si5351.drive_strength(SI5351_CLK2, SI5351_DRIVE_4MA);
Then the birdie at 7199 completely disappeared! So far I haven't noticed any other negative side effects on the receiver. Can other BITX40 users perhaps try this too and share the results please? You can try other drive strength values too (accepted values are 2, 4, 6, 8 mA)
If this is indeed a good fix then we may have to include this in the standard Raduino code,
73, Allard PE1NWL
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I took a 50 volt 2200 uf electrolytic capacitor and stuck it between the + and - lines feeding the dds. Right at the connector near the board. ? Killed all the clicks.
73
Terry
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Raj vu2zap
Stephen Stocker
Allard PE1NWL