I agree with Steve, the range of adjustment by squeezing the coils is entirely adequate, this is one of the best behaved input circuits I have ever experienced. I will be duplicating it on my YC-156
Just used elsie to design a legal limit 70 MHz LPF and it worked first time, thanks Jim. 73 Conrad G0RUZ Tom: A nice full-fledged lumped-element design and analysis program can be seen here: http://t
I have a YC156 for sale that was obtained from Tom Whitted WA8WZG and is guaranteed full output. I am looking for 200 GBP or nearest offer. 73 Conrad G0RUZ ___________________________________________
I am looking for ready made PA's for 6m, 2m and 70cms. I would prefer desktop PAs as these are for use at a site that has to be shared with others and I don't have a lot of space. Solid State or tube
There are some nice high power filter designs at the following link which I believe are based upon G4SWX's work. These will handle a lot of power. http://www.pa3csg.hoeplakee.nl/filters/Filter.html I
I have been very fortunate and acquired a few nice 1kW class pallets for 6m, 2m and 70cms. They are fairly well known designs but as I have had absolutely no experience of these kinds of amplifiers I
I am just about to try an build my first ever SSPA using a pallet with a heat-spreader, only 250W in AB for this first one. I must confess that I am utterly clueless when it comes to working out what
I'm not sure why but my text keep getting stripped out of my messages when It send to the list. This is what I said in plain text. Thanks to everyone who responded to my questions, I have a much bett
For sale on behalf of North Wakefield Radio Club G4NOK. Well built and fully functional 2 x 4CX250B W1SL 2m amplifier in good working order, clean 600W SSB with around 8W drive. PSU has screen and gr
I have a single 60A 50V Blade supply and several LDMOS SSPAs under construction, some of which use 2 pallets and will require 55 amps. I was thinking of using the 75A powerpole connectors for distrib
For tube sized holes the Q max metal punches have always worked very well for me even on 2mm aluminium. I think that biggest one I have is 75mm. I've gone solid state now so it's less of a problem. I
Hello I have the following brand new LDMOS devices for sale: BLF578XR - 100 GBP each - 2 available BLF178XR - 90 GBP - one available Shipping is 10 GBP Europe, 15 GBP USA - traced and tracked. I am s
Hi does anyone know where I can obtain CDE MIN02-002 series clad capacitors in the UK or Europe in small order quantities. If anyone knows who the rep for the UK is please pass me their details. Many
No one knows this? -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting
I have been asked to look into the possibility of remote monitoring an SSPA at a distance of a little over 50m. My feelings are that ethernet is the way to go. I will need to monitor supply voltage a
Has anyone got any UT-300C-25 or similar semi-rigid coax that they could sell? I know that I can buy it in 5 foot lengths from Tek Stock in USA but I only need 60 cm or 24 inches. Does anyone know wh
Has anyone got a connection diagram for the CISCO WS-CAC-2500W which is a PSU for the Catalyst 6500 Series switches. I would like to use 2 for my SSPA's in the shack. They are 42V so I'd like to know
The CISCO WS-CAC-2500W 6500 series switch supply that I acquired actually works without modification. Once I got hold of a C19 mains cable. Plug it in, switch on and off it goes. However I would like
Can anyone suggest what the duty cycle for sensibly processed SSB would be during contest conditions? When an LD-MOS PA is backed off to achieve good linearity then the efficiency reduces from 80% at