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Hi Al That doesn't look like any of the other resistors in the QCX kit. It that arrived in the kit bag then it's just something that fell in by mistake somewhere along the line... you can safely

The stock QCX-17 is tuned to 28075.1 kHz for this little event. Quite by chance and, once again, it is five-miles-away KN4MKX doing the honors ! I love this radio ! 72 / 73, Bill, N4QA

Hi Alan, The Racal rig is a PRM4031 and the fault was a Tant cap going s/c and then taking out the TIP32A series 9v regulator all on the analogue transceiver board. The manual on the VMARS group is

Jim / KJ7AOO, QRP as a means to doing DX, the basic answer is of course.? There have been many who have done DX-CC using QRP so can it be done has been answered. Will the dipole MFJ1774B do that

Hi John, FT8 / JS8 built into a QCX is an interesting challenge. More so depending if your development aims to maintain backward CW Transceive capability or new Digimode Transmit only? As it stands on

Hi Geoff, /Hope I didn't infer WSPR was a Communication mode..... :-)/ I did a? cut & paste of the WSJT suite description from their homepage, as WSPR was lumped in descriptions it that maybe didn't

I kept out of this as I don't have a requirement, revolutionary ideas I had in the past result in I wake in the middle of the night realising that wont work.... I think sometimes we get to wrapped up

Hi Frank If you're going to multiply it by 390 I don't think the QRP Labs synth products are going to be stable enough, low noise enough, nor accurate enough for your wishes. I didn't design them with

Hi, David In essence, the 2 windings that drive the Tayloe detector have to be wound identically. The other 2 are less important. The easiest way to be sure of this is to wind all 4 the same way,

RE ...? Winding? T1 Document revision 1.08, 23-Oct-2017? ?? ?https://www.qrp-labs.com/images/qcx/assembly_LT.pdf Go to page 50, that?image is worth " 10,000 words " 72 73 John N3AAZ

This image shows that... The three short windings are in phase with each other The large winding is out of phase with the three short windings 72 73 John N3AAZ

Frank, I was forgetting, I use TCXOs with my Synth modules so at 27MHz there is practically never any +/- 1Hz variation so the VFO would still be moderately stable when multiplied up. Of course that

Some more information here on the BATC Wikipage:?https://wiki.batc.org.uk/Es%27hail-2_LNBs_and_Antennaes 73 de Frank PH2M

Are you saying that the enclosed photo is incorrect? It looks like the phase of the three small windings is reversed from the large one. David J. Wilcox K8WPE’s iPad

Hello Hans, Alan & others, Common satellite LNB's use 9750 MHz. (& 10600 MHz.) as IF frequency to get the normal satellite frequency down to the satellite receivers frequencies. For the new

I have found that a hard toothbrush instead of q-tips makes board cleanup much easier as the cotton wants to shred on any solder/lead/wire standing up and the base of the solder joints don’t get as

Hi, Lloyd Step 1 - Take 2 full size paper towels and fold them into a pad maybe 6 inches on a side. Step 2 - Rubbing / Denatured / Isopropyl / Gin / Vodka and an old toothbrush - Give the area with

So, I thought to myself, "Self, where, within the 12m band ( or almost *any* band, for that matter ), are we most likely to find a readable signal or two on the stock QCX-17 ?". "Within the FT8

First get some q tips and 90+% alcohol and clean the crud up so you can see what’s what. Firm but gentle. You will not be able to get rid of all the black but should be able to make it much easier

Thanks! I was picturing little drop down feet in the back like Mountain Toppers from LNR have. I'm not sure about the color either, that was just what filament I had on the printer that day. The box