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Re: Forty-9er Transmitter
Been reading about the VFO output level, so I took my scope to it. I set it to its lowest level of about 400mv and the rf OUTPUTvoltage level was very low. The heat sink remained cool. Putting it back
By bobarr@... · #708 ·
Re: Forty-9er Transmitter
Thank you, Jim. Based on your clue, I lowered the signal on pin 6 down to 250 mV PEP, but still have my click. There is still a fly in the ointment. I hate flies. Bob
By [email protected] · #707 ·
Re: Forty-9er Transmitter
HI Jim: I wish I could be of more help, but like I said, in lack the knowledge. I will forward this to him. He just started his semester so I know he's busy, plus we're working on a new project, too.
By jjpurdum · #706 ·
Re: Forty-9er Transmitter
Hi Bob, I've mentioned that the data sheet for the NE612 specifies 200mVpp minimum to 300mVpp maximum for the NE612/602 L.O. input (pin 6). Using the buffered output on the DDS VFO, I was only able to
By James Davison · #705 ·
Re: Forty-9er Transmitter
I programmed the ATTiny85 first with the Blink example and it worked blinking 6 seconds on and 6 off. Then I tried CapSenseKeyer with a board from a friend and no joy. So, I studied the code and
By [email protected] · #704 ·
Re: Forty-9er Transmitter
I will test voltages on both sides of L3. After work I will take the rig apart. It would be nice to have a few test point values from a working rig to help isolate the culprit. Bob
By [email protected] · #703 ·
Re: Forty-9er Transmitter
OK. I just wanted to be sure you weren't using the code for an Arduino. Let me review things tonight...probably will get back tomorrow. Jack, W8TEE To: SoftwareControlledHamRadio@... Sent:
By jjpurdum · #702 ·
Re: Forty-9er Transmitter
There's only one file and it appears to be for both. Bob
By [email protected] · #701 ·
Re: Forty-9er Transmitter
Are the voltages on the final reasonable? Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Thursday, August 18, 2016 4:04 PM Subject: Re: [SoftwareControlledHamRadio] Forty-9er
By jjpurdum · #700 ·
Re: Forty-9er Transmitter
OK...found it. Are you using the code with the Digispark or the "raw" ATTiny85? Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Thursday, August 18, 2016 4:02 PM Subject: Re:
By jjpurdum · #699 ·
Re: Forty-9er Transmitter
In case that was the cause, I replaced the D882 with a BD139 from W8DIZ. Same problem. Bob
By [email protected] · #698 ·
Re: Forty-9er Transmitter
Several others have had that problem. I've dialed my voltage back from my base rig voltage of 13.8V to 12V and I've not had any problems. I did have a heat sink on it before that, but have since
By jjpurdum · #697 ·
Re: Forty-9er Transmitter
CapSenseKeyer.ino Bob
By [email protected] · #696 ·
Re: Forty-9er Transmitter
I had the same thing happen to one of the 49-er kits that I built and another one from a friend--it was a blown D882 transistor in both cases.? de Karl, KO8S
By Karl Schwab <ktschwab@...> · #695 ·
Re: Forty-9er Transmitter
Ok, but there are several files in that download. Which file are you looking at? Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Thursday, August 18, 2016 3:28 PM Subject: Re:
By jjpurdum · #694 ·
Re: Forty-9er Transmitter
Idownloaded source code from https://www.mhprofessional.com/product.php?isbn=0071834052 Bob, KF6ABC
By [email protected] · #693 ·
Re: KY-040 encoder threaded for mounting? [2 Attachments]
Here's 10 encoders for less than $5 including shipping (search: 121993737161): Of course, these are from China, so you'd have to wait a while. Jack, W8TEE To:
By jjpurdum · #692 ·
Re: KY-040 encoder threaded for mounting?
I also needed an encoder with threads, and was concerned by several comments from buyers who were disappointed to find out that what they got didn't look like the pictures. I picked up some from this
By MICHAEL BOHN <bohn48@...> · #691 ·
Re: KY-040 encoder threaded for mounting?
Hi Dave, Send me you address and I'll send you one.
By Stephen Stocker K7SWF · #690 ·
Re: Forty-9er Transmitter
What source code file are you looking at? I don't remember writing code with PADDLECOMMON in it, but that doesn't mean I didn't...I've probably slept since it was written. Jack, W8TEE To:
By jjpurdum · #689 ·