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For 11059 kHz, the band is almost 2X the IF frequency. Frequencies in kHz: 11059-5200 = 5859 11059-5400= 5659 The LO would tune 5859 to 5659 MHz.? Too close to the 5200-5400? for comfort.? Too much

If only it were so easy (it isn't) Sideband inversion: When the LO is above the IF the sideband gets inverted. The Crystal filter favors the LSB with the steepest roll of on the high side of the

I can corroborate what Steve said about the 2078's from Dan's. I also bought some TA7642's from him recently, just for fun. They're the TRF AM radio on a chip - similar to the ZN414. I built a little

Yes I am also interested to the answer of this question. I have a experimental transceiver on my work bench now. Testing on 40M. The IF is on 8MHZ because I have many of this frequency xtals. LO is at

There is a correction to the schematic! I left out the negative feedback resistor and cap on Q1. Corrected schematic here along with same picture of the test fixture from before (which has the

Hey Steve. I realize now why my answer was way, way off. Serves me right for firing off a half baked answer! What about 11.0592 Mhz? 11.0592+5.3 = 16.359 Mhz, out of any ham band, and a very small

Hi Mike, Yes, I see folks bought his remaining stock after I posted about it. But he emailed me today that he has 100 on order, but didn't say when they're expected. First person to notice his ad

Steve, Thanks for the link and schematic. I was going to order some but it looks like he is out of stock. We can fall back to Dan's Small Parts. Mike N2MS

What is the downside of using LO above the IF , i.e. 17400..17800kHz? 73, Mike AF7KR

Hi Ryan, A couple of issues: 1. 455 kHz doesn't lend itself well to? rejecting receiver images adequately. For AM BCB, it works OK, but the higher in frequency you go, the tougher it is to filter out

Yes, 0.1uF, standard bypass cap--I didn't notice I hadn't labeled it until now.?? :) Steve

Hey everyone, I don't think I'm going to get around to building it. I was very excited about scratch building a PSSST-20 and the kit is awesome, but time constraints are causing me to be more

How about an IF of 455 Khz? Readily available and out of any amateur band. [email protected]> wrote:

Thanks Steve,? exactly what I need.? One question,? is the unlabeled capacitor to the left of T2 a .1uF? Doug

I am thinking building a version of my single band single band 40 Meter SSB transceiver? to work on 60 meters, but have to carefully choose an IF frequency. The current IF frequency for te 40 meter

Here is the schematic of the PA transistor test fixture I'm using, and a picture of it with a reference 2SC5739 installed. It's easy and fast to simply bend the base and collector leads out at right

Thank you Steve - I ordered a few. I think that if sellers are slow to ship, they should set expectations, by saying something like, "I only ship at weekends. If you order on Monday, your order will

Steve can you share a schematic of your test setup.? Maybe a couple of pics. Doug,? KI6DS

I've recently been testing a 14Mc power amp circuit, comparing several output transistors for 5 watts (45 Vpp) into a measured 50 ohm dummy load. I put a scope probe on the output and adjust for 45

Very sorry to hear that Charles has passed. He contributed much to our hobby. Prayers for his family. Jim WB4ILP [email protected]> wrote: