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The filter is 650 ohms and not 50 ohms. It is a roofing filter in this application so I will not expect SSB filter results! Change your span to 2MHz and look. Ultimate rejection is 910KHz. Raj

Fabian, Just a normal fixed resistor. The i2c bus has two open collector signals named SDA (data) and SCL (clock). Each of those two signals has a pullup resistor to 3.3v or 5.0v, with a value of

very much same as yours.

I keep thinking back to the 2nd post on this topic where??HA5OGL suggests modifying the Termination Insensitive Amplifier to make it a tuned amplifier. I don't have a uBitx board so I don't know how

How do they look for insertion loss? I think 6 dB may be manageable but 12-20 is going to be too much. WA8TOD

Warren, Just measured one of mine from junk box also, with almost identical results to yours. Very slightly narrower BW. . Mine are 45E2BF? made by Toyocom. Actually part of? a pair. If i series

Thats ok on parts.? Although getting them might be another story. I have? a pretty good 'junque box' from years of playing radio, but never deep enough with whats 'wanted'. And typos. glenn

Kees, your thinking of K3 relay bypass? It works but you must have some form of audio switch like V4 or the board you make up. Tried that back in june, likely wrote about it here along with a modified

Glen, Generally I used one 5109 for ever pair of 3904 due to what I had on hand. However there are a raft of other parts in the CATV class of 1-3W, 800ma Ic, and FT greater than 1200mhz. Did not say

My filters arrived earlier than expected. These are from eBay at?

I’m not exactly familiar with this master calibration. I found a way to simply measure the offset of the 25 MHz Crystal by having the system send a 25 MHz signal and measure it with accurate

All great ideas! Goal here is to be helpful. We may not always reach that, but we can certainly do better each day. Cheers, Gordon

also, I guess a typo, in ===final amp==== FB43-202 should be BN43-202 core. vk3pe

Allison, to clarify your "full bore" list: ===q90 stage R86 should be R81 ===Pre driver When using 2N5109, is that one device replaces the two 2N3904's? For those us in Metric countries, #28 is about

One nice thing about the si5351 (or multiple si5351's, or a mix of those and si5338's) is that all clocks are generated off the same 25mhz reference. So if calibration is set up correctly, it can be a

For higher end designs, it is best that there as few clocks used as possible. I prefer to use individual Si570s For the tracking generator of my specan, i used two si570 with an relay to switch the

I second Bill's comment. I also participate in a 3D printing forum.? I think is worth repeating their forum user policy. In a nutshell, before you speak, *THINK* : *T - is it True? H - is it Helpful?

On Fri, Sep 7, 2018 at 11:50 AM, Jerry Gaffke wrote: > > Here's an old post regarding the use of a 5v i2c LCD display with the > Raduino: > ? ??/g/BITX20/message/39966 > > Summary:

I usually save it that way.? I have also replaced the Arduino PCB thinking that was the problem. Bob

Ok t