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Re: Capacitor for the LC Circuit is a 56pF
Thanks Frank My address is good on my qrz page.. Thanks to the others.. I still need the 56pf capacitor so if someone has that I'd like to have one.. My local RS didn't have the cap, but I did get the
By ns3l@... · #189 ·
Re: Capacitor for the LC Circuit is a 56pF
Steve: If that is a 22uH inductor then Mouser part no. 70-IM2-22. Give me your address and I'll send you a couple. Frank Moskal kayandfrank@...
By frank moskal · #188 ·
Re: Capacitor for the LC Circuit is a 56pF
My post on April 10 gives the supplier's URL: Electronic Parts Online Store - Tayda Electronics | | | | 0.14 | | | | | | | Electronic Parts Online Store - Tayda Electronics | | | | I find them to be a
By jjpurdum · #187 ·
Re: Capacitor for the LC Circuit is a 56pF
Where can I purchase the 22uf inductor.. I doub't my local radio shack has these..I know I can most likely get the 56pf cap from RSbut right now I have the 49'r kit underway and need this one part..
By ns3l@... · #186 ·
Re: 49-er D882 Output Transistor Smoked
Hi Dennis... and thanks for the reply. I actually discovered this sad fact last night. The weather in my neck of the woods has been too nice the past few days to do any experimenting, but I hooked up
By Aaron Heverin <aaronhev@...> · #185 ·
Re: 49-er D882 Output Transistor Smoked
Aaron, I think you definitely over drove the PA! Typically, an RF probe is a half-wave rectifier.? If you are trying to measure the peak-to-peak voltage, the best way is with an o'scope.? With the
By Dennis Kidder W6DQ · #184 ·
Re: DDS VFO TXOffset Function
Nope...I never got around to that. I'm hoping someone in this group might run with it, as I have other projects I want to get to. Jack, W8TEE To: SoftwareControlledHamRadio@... Sent:
By jjpurdum · #183 ·
DDS VFO TXOffset Function
This question is most likely for Jack W8TEE. I have my DDS VFO and 49er assembled and all appears to be working correctly. I have a question about the tx offset function. I do not observe any
By Robert Vogelpohl · #182 ·
49-er D882 Output Transistor Smoked
Evening all. Some troubling news... but I want to bring it up to the group in the hopes that the same problem can be avoided for others building the radio. I've had my DDS controlled 49-er on the air
By aaronhev@... · #181 ·
Re: L3
Thanks Norbert, My question is: Is the green one the same characteristics as the black core. I searched for a green ferrite color code and it doesn¡¯t track to the specified type. 73 Gary
By Gary White <white512@...> · #180 ·
Re: L3
Hi Gary! I had the same experience with mine. The red is red and the green is the one they refer as black. L3 = Green core 11 turns L4 = Red core 16 turns Check the "49er Inductor windings" post from
By wp3dx@... · #179 ·
L3
My 49er kit came with a red and a green ferrite core. Has anyone else had the same experience for L3 (green not black), and does the green core seem to work for L3? 73 Gary W5GW
By white512@... · #178 ·
Running on LiOn Batteries
Hi! Quick update, I hot glued a battery holder to my case and I'm getting around 12.6 volts (fully charged) with three 18650 LiOn batteries. I believe these are rated 3000mah (Samsung ICR18650-30B).
By wp3dx@... · #177 ·
Re: 49er Harmonics
OK, thanks Jack.? As I said, my testing methods were primitive and just a first glance.? I'll dig into the details next week when I get back to the workbench.? I may have something messed up on the
By dfine01 · #176 ·
Re: 49er Harmonics
Dave: Dennis has posted the spectrum traces for the VFO and they all look within specs to me. Jack, W8TEE
By jjpurdum · #175 ·
Re: 49er Harmonics
Yes... And Dave, If you haven't done so yet, you may have to run the formula that Jack describes in the QST article in order to get the VFO calibrated perfectly. We breadboarded this project every
By AaronHev <aaronhev@...> · #174 ·
Re: 49er Harmonics
Don't forget that the crystal on the DDS board may not be exact and you should expect some deviation. The article details how to correct for the "slop" you may find. 73,Jack, W8TEE To:
By jjpurdum · #173 ·
Re: 49er Harmonics
Thanks for the response Aaron.? I haven't had time to investigate what is happening yet and won't get a chance to do that until next week sometime as I'm getting ready for a short trip.? My DDS is
By dfine01 · #172 ·
Re: 49er Harmonics
Hi Dave. I have to admit that I haven't but I certainly will now. When I fired up the DDS controlled 49-er for the first time, I checked it against my frequency counter to see what it was doing. I was
By AaronHev <aaronhev@...> · #171 ·
49er Harmonics
Has anyone looked at the harmonics on their 49er. I must admit that my testing method is primitive but looking at the 2nd and third harmonics on my K3/P3 panadapter, the 2nd and 3rd harmonics on mine
By dfine01 · #170 ·