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About 2600km on 80m - with a half-collapsed wire antenna https://www.youtube.com/watch?v=pZcXBVX-tJk

I was wondering why the Softrock TXRX had just 3 close bands (mine 10-12-15m). Now I know there were good reasons for that!

All good points Warren.?? I did some checks of isolation using a typical DIP relay, type HK19F. DPDT I made a small jig to hold the relays and measure isolation across contacts etc. Typically it was

Suggestions based on experience and good practice are all good. It is my experience however that some fairly simple measurements can and need to be made in order to confirm a layout. First, simply

> > https://www.altronics.com.au/search/all/?sr=Din%2BSocket&pg=16 ( >

LT1252 is an transmitter preamp in Wayne Burdick N6KRs Wilderness Simple Solidstate Transceiver, (SST), monoband CW txcvr design, from circa 1999. I built one and added an IRF510 afterburner for 5

Two suggestions: 1. Looks pretty tight. You might leave a bit more room for the hobbyist to reassemble the filters 2. I don’t see RF bypassing on the coil wiring—so signal can bypass the filters

Nick 1. Wired OR diodes used for Relays J1A B? great idea. and I can see you seem to have allowed for relay contacts being opposite sensed. Ie J1A B set is active when Energised and Energised is out

Just to exclude you weren't listening the WWV. You also can use the other references at 5 and 15Mhz. Usually when I calibrate something as a double check I use these references too and a shortwave

ajparent1/KB1GMX schreef op 2018-08-30 20:55: Okay! Yes, I bet it takes a while for the code to recognize if we have a keyer input and then switch from USB to CW... Maybe I should hack the code a bit

Ben Holmes schreef op 2018-08-30 20:17: Thanks Ben, will have a look. Regards, Joop PG4I

All of my modelling says it should. There have been many posts on this subject months ago… about 400pf is a good start. Sent: Thursday, August 30, 2018 4:57 PM To: [email protected] Subject: Re:

Probably just the boards, You need to re-use the LPF from the existing board. Option to add a Firth filter is you want. Relays are Omron g6s-2 12v 73 Nick VK4PP

Dear OM, Will you make it available as a kit ? DIY or Assembled ? 73s ARNAB SEN ( VU2CMV ) 6/35 JM SENGUPTA ROAD. B-ZONE. DURGAPUR-713205. MOB:9434833047

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Actually I’ve been doing a lot of experimentation on flattening/ linearizing the transmit chain. The parts I’ve fallen on are the NE46134’s. They have plenty of gain, Ft of 5 GHz, and with the

Hi All. Hows this look: 73 Nick VK4PP

Those points need series inductive(lossy ferrite) and/or resitive isolation as the caps have ESR and however low if you present RF from the power supply side its not sufficiently effective. Of course

On Thu, Aug 30, 2018 at 02:56 PM, Kees T wrote: All of the WA2EBY derived dual MOSFET Amp designs I've seen (IRF510, RD16HHF1, RD15HHF1) have a "compensation capacitor" across the output transformer