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Anyone ever heard of this amp ? A Google search comes up empty. It's listed on that Auction Site. 73, Dick, W1KSZ

Paul, Thanks for the feedback – and to Dale, W4OP for posting his Si5351A spectrum result. I’ll have another look at the PLL VFO’s output. My memory may be mixed up with the result of a

Paul, Thank you.? Very interesting.? I don't plan to ever get a 2NT but others will probably find that info really interesting. Someone could go to ebay and by an Si5351 board for $5 and an Arduino

Thanks!? This is very helpful!!? Really appreciate your patience with me and my poor technical skills. 73, Bill NZ0T

Paul, I'm sure I responded to your post, but don't see it here, so am responding again. The Si5351A output is adequate to drive the 2-NT to full output on all bands. When operating straight through,

Gary, I thought I had replied to W9AC's message. Not sure where it went, so here it is again. The Si5351A output is adequate to drive the 2-NT to full output on all bands. As shown in the pdf you

The PIN attenuator has no connection to the meter circuit. The forward wattmeter voltage is also fed to a Norton op-amp on the ALC board though diode CR1602 in parallel with a .01 capacitor. This is

The meter works fine on RX and the S- meter adjustment worked perfectly. The problem is in TX where the meter reflects down below zero. In the circuit description in the SM on page 1-2 that there is a

I don't think your problem is with the ALC board. You need to find out where the voltage that is causing the meter to deflect downward is coming from. The meter is driven by the wattmeter sensor in

I've been busy with yard projects and a new deck railing but got back to the TR7 today.? I replaced the AA119 diodes CR2001 and CR2002 with new 1N60P which made no difference.? The? meter still

Paul L., We are still curious about the 2NT VFO drive level.? From the manual it appears the Si5351 by itself will not be enough above 40meters. 73, Gary WB6OGD

Paul, Too bad he won't give you the source code. Rather than a kit, it is pretty easy to build an Si5351 VFO with an Arduino and available source code. 73, Gary WB6OGD

Dale, Thanks for that. Better than I expected. 73 Paul, N9PL

Gary, That would have been my first choice if the QRP Labs kit had software to support this function. I contacted QRP Labs after assembly and they confirmed that their kit does not support switching

Please upload images here. Show top off, straight down shots, front, top (case on), etc. Thank you. Joe – W7RKN From: [email protected] [mailto:[email protected]] On Behalf Of Ron K0IDX via

So I took it apart again. Put the clear disk right side up. But I lost the washer that goes between the rubber cylinder and the rest of the gear train. It fell out, rolled away... Despite a most

Thanks! 73 Stan KM4HQE

I have a T4X that I went through a couple of years ago, cleaned wafer switchs with DeOxit etc. Went through alignment and has good RF out. This T4X has a tuning knob that matches the "B" line. Chassis

Paul L, You can switch the Si5351 output off/on at >50WPM via software, no need for a relay. 73, Gary WB6OGD

Paul, That looks like a really nice VFO! I am curious about amplitude too.? The Si5351 puts out 3.3vpp square wave.? Normally people say you need higher amplitude for a tube rig. DDS means Direct