On the FT-101 there was a mod to drop the fan speed on receive. It was a simple resistor to drop the AC voltage to the fan causing more slip and slowing the fan speed. It worked fine. -- Ron
I remember doing life tests in filaments of lamps and when DC was used , it caused plating of the filament material from one side to the other essentially plating the filament away on one side and ca
The technical point here was that the filaments evaporate over time. No one was saying that one could not use DC to power filaments , just that there was an observed lifetime difference when using DC
We wore these badges at "Technicare", now out of business and made CAT Scanners as well as MR Scanners. Having "accidently" broken one , there is film inside with three windows. One is just film with
Agree. What the hell is it with this group? The nice part about email was supposed to be that one could write a quick message without worry of grammar , spelling etc. Now were back to being perfect a
-- Original Message -- From: Richard <2@mail.vcnet.com> To: <W8JI@contesting.com>; Dr. David Kirkby <davek@medphys.ucl.ac.uk>; Ron <w8ron@stratos.net> Cc: <amps@contesting.com> Sent: Tuesday, July 09
In working with fans , pressures developed are less than 1 inch of water where 1 atmosphere is roughly 32 feet of water or about 14 lbs / sq. in. If it develops more than say 1/2 in of water , it is
Hi Vic. I use thes types of relays for many things. If you have the ones that actuate from 3 to 32 volts , it would be easy to get some interferenc from RF dropping the actuating voltage below 3 volt
Hi David. It sounds similar to the designs used in microwave ovens that has been discussed several times on these groups where a matgnetic shunt is placed so that the primary flux has an alternate pa
Good luck as you have a tube that has seen some forces causing the anode to bend to one side. I had one and banged the tube to my hand to force the anode straight . It worked and the tube is in servi
Hi David First guess is that your FT-1000 has a spur at 7 Mhz and the amp is making the third harmonic. I take it that you are adjusting amp power by reducing drive from the FT-1000? That would make
Hold on here a second.. If you didn't pick 6 and 8 Mhz then your whole argument falls apart. What does a mixer have to do with the generation of harmonics related to non linear amps of a single signa
I read these pages and couldn't find a reference to the f/2 discussion. It seemed to discuss injecting energy into a resonant cavity using a charge pump running at twice the cavity frequengy and also
Hi Jeff. Thanks for you mail. I think the topic is drifting where one fellow had a problem with a spur on his amp at 1.5X the fundamental. The discussion the came to suggestions that the AMP was crea
Tom /Gary. The bird only picks up voltage or current but not both. It is not capable of measuring power except that it displays power from the equation P=I^2R =V^2/R. The directionality is where it i
Hi Tom/Gary/Ian The discussion has moved from " Where does the power go" to "How does the Bird 43( trade mark) work". I have to admit that I am not the expert on the technique of how the meter intern
Hi Jeff. I had the same experience buying a CE certified supply. Compliance emissions testing must have been done without any wire attached to the output leads! As soon a a wire was applied , it sang
Hi Bill. Your point about the 25 vs 100 ohm load clears up my misconception that the bird measures current only and I stand corrected. I cannot dispute that the current at the end would be small and