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Bob / K3JOP, Send me an SASE and I will mail you a 22uH choke for the 49er filter mod. I had to buy a 'lot' from China for mine. They seem fine but I give no warranties! QRZ.com address is good. Don /

Hi Ivan: First, make sure you have downloaded the doc files from Farrukh web site. We sent QST a set of new files before the article even appeared, but they apparently have not used them. Use the

This project appealed to me almost immediately after seeing it in QST and I thank and congratulate the authors on a terrific project. I am not a computer guy nor an engineer and am a complete newbie

Debco Electronics has them, 2 for $2. Debco Electronics | Choke-Axial | | | Debco Electronics | Choke-Axial Debco Electronics Inc. - capacitors - rf connectors - fuses - ic sockets - integrated

Does any one have a part # (from Digikey or another vendor) for the 22 uH inductor for the mod to the Forty 9er. I do not believe that it was included with Farrukh's DDS parts or the Fory 9er kit. 73,

Did the other measurements help you? Yep, I had a hard time reading the numbers on the schematic. Thanks for the audio jack info. Any ideas on fixing it? SoftwareControlledHamRadio@...>

Thanks Bo... The 386 output is pin 5 not pin 6...I bet you knew that! The Audio output jack on the 49er is a 2 conductor as far as I can tell, just not wired correctly on the PCB, i.e., the LM386

Keep in mind that the ADC is a 10-bit converter, so the max is 1023, which means the math for map() needs to resolve to an int. Therefore, since you are using constants: int term = 500.0 * ((330.0 +

This is what I use to measure battery voltage in all my instruments. Just two fixed resistors, accuracy is good enough for what I want Choose the values to for what voltage you want to measure as

Sure! Jack. W8TEE To: SoftwareControlledHamRadio@... Sent: Sunday, June 12, 2016 1:23 PM Subject: [SoftwareControlledHamRadio] Re: Farrukh's R8 Response ? I'm working on the code for the

I'm working on the code for the voltmeter circuit. It's taking a bit of time due to home and work obligations. Also I've had to rethink how I want the application to run a couple of times so that

I just got this from Farrukh: Hi, R8 is a 10k 25-turn trim-pot, used to calibrate power supply voltage measurement into Arduino Nano analog input A7. I think someone on the forum is working on code to

I just got this from Farrukh: Hi, R8 is a 10k 25-turn trim-pot, used to calibrate power supply voltage measurement into Arduino Nano analog input A7. I think someone on the forum is working on code to

Measurements for the March QST XCVR NE602 1 1.5vdc 2 1.5vdc 3 gnd 4 7vdc 5 N/C 6 VFO 7vdc & 4.0vpp ac 7 7vdc & 4.0vpp ac 8 8.2v dc Audio output 386 pin 6 30mv pp Nice CW sigs tonight before the

Here's what kept my audio off for the first day. The earphones have a 2 conductor jack, the xcvr has a 3 pin jack. Off to make the measurements for you now. SoftwareControlledHamRadio@...>

If anyone's ever in Cincinnati, you have to visit their store. From the outside, you'd hesitate to go in...old building in older section of the city...safe, but not pretty. But, go inside and it's

Jim, I'll make some measurements this evening. Going to build the bci filter from Jack. If you need a spare kit for parts or whatever I can loan you one I have and you can replace it when the ship

Jim: As soon as I finished the BCI filter, I called a friend of mine who wanted to try the rig out, so I just gave it to him. I have no way of measuring the voltage at J2 or J3. Can someone else do a

Agree Jack. I keep thinking it should be something obviously wrong. This is the 2nd 49-er kit I've built (very carefully) with the same symptom as the first. Although the DDS VFO system is on a

One of the first posts I made here was for a BCI filter (see early photo). You can see the values in that photo. When I tested that filter, I wound the inductors on small toroids (FT37-61). I wondered