I would argue that software should really come under Copyright Law as it is not something which can be developed into a physical object. But I do agree that many patent submissions are pretty stupid
Aren't these switches known as "Make-Before-Break" and "Break-Before-Make". Regards David G4FTC _________________________________________________________________ The next generation of Hotmail is he
Certainly in the UK make-before-break and break-before-make are standard descriptions for all switches, including rotary. The normal description for a shorting wafer of a rotary would be a rotating
The simplest, safest and probably cheapest would be for you to go to the States on a cheap APEX low season ticket and pick it up personally and bring back as checked in luggage. This way you probabl
Just a follow up from my previous post, the team with the blown up amp was the 2004 Chesterfield Dxpedition. http://www.df3cb.com/chesterfield/pictures.html Scroll down to see the pics and the story.
<Snip> One of the big cons here in the UK is that they charge duty and VAT not only on the value of the goods but also on the carriage charges. The combined duty and VAT is typically 25%. Nevertheles
I also endorse Max-Gain. Excellent Service David G4FTC> Date: Sat, 3 Nov 2007 19:05:14 -0400> From: ne2i@optonline.net> To: barrie@centric.net> CC: amps@contesting.com> Subject: Re: [Amps] Amp Parts
I haven't tried this but the following may work. Firstly you need to buy some polyester (mylar) drafting film which can be used in a laser printer. This is sold not only for drafting but also for pr
I have only used the polyester film for PCB layouts - from my experience the toner fuses into the polyester very effectively. I think the chance of the toner lifting is very low. BTW the trade name
The flux density is set by the excitation voltage and not load current - if you are running the transformer from the correct supply voltage, the flux density will be OK. What you will get is increas
you are running the transformer from the correct supply voltage, the flux density will be OK. higher load current - this will result in increased temperatures and it is this which can ruin the trans
Robby, I have an RF-104 - works fine on all HF bands but only covers the top part of 160m in its standard state, but can be modified for complete 160m coverage by the addition of some Cs. Bet you had
Robby, The RF-104 is not normally set for "ground keying line to tranmit" operation. However all that's needed is a 1N914 or similar diode inserted in the Program and Junction Board behind the front
Castrol R. In the late '70s I was told that it still could hold its own over mineral oils and this held true until the advent of synthetic oils Castrol still do make a Castor Oil based lubricant - C
There's another factor to be considered. Sometime ago I was considering using a PIC as an amplifier controller, and certainly there are certain advantages to that approach for sequencing, step-start
Snipped When I click on the above link my Norton Anti-Virus reports that the site is trying to load "Downloader" - a Trojan - onto my PC David G4FTC _________________________________________________
There's a schematic for a RF-103 on the Boatanchors Archive. http://bama.sbc.edu/harris.htm There may be some common elements circuits used between that and your RF-101 such as the power supply and
transmitters. The 'standard' tube used for 3 - 5 kW FMs that used tetrodes was the 4CX5000A, in RCA and other makes of power amplifiers. George Badger of Eimac showed us their new shortened 4CX3500A
Checking page 4 of the datasheet for the RCH50 http://www.vishay.com/docs/50006/rch.pdf shows a maximum overload capability of about 50 Joules. A capacitor bank for a linear of 50uF charged to 3kV w
True - but the arc will continue until the applied voltage has dropped to quite a low voltage, which without a crowbar, means that the resistor will in effect dissipate the energy in the capacitor b