....... and the old 807 eg the military version without screening because of economical reasons. The first 807s that came out were a 6L6 with additional screeing and quite stable. Did not Pat Hawker
I just got a mail from a SB1000 owner who gets the normal 750 -900 watts out with his old used tube. But wíth two different new EIMAC tubes he only gets around 200 -250 watts out and both tube
I want again raise the question I raised many months ago and did not get any reaction at all. Maybe I should have included the word nichrome,hi!: Why not use triode/or supercathode connected 8122s or
Tnx Tom: I think my idea is much simpler than using 4CX400s or 4CX800s. There are many SB230s, Henrys and MLA 2500s around using 8875s and 8873s collecting dust and unusable. So my idea it is wortwhi
Hej Michael: I worked your ET2 station located at that time at Kagnew space center. No problem with your sigs up here at my KWM1 - the only SSB transceiver in Sweden at that time! 73s de Hans SM5KI -
Remember the tag attached to the TEKTRONIX oscilloscopes years ago? READ YOUR MANUAL BEFORE OPERATING and there was a picture of a number of surgeons in full uniform and, if I remember right, big kni
Tom: What is missing in those data sheets is how linear the Russian tubes really are? EIMAC always published the distorsion products but there is nothing on the web on the Russian ones. Or have I mis
Tnx everybody who contributed in this discussion. But I am still mixed up: How can a new 3-500Z tube, pushed to around 250 watts output, power glow? How can two different new tubes behave in exactly
Those white ERIE (?) ( composite?) resistors used in PYE equipment around 1957 were really drifting. On one occasion in 1957 I repaired a receiver in a 70 MHz AM station ( one of the two first Taxi r
Very good idea. Reminds me of those beam deflection 7360 tubes used in SWAN transceivers as balanced modulators. When you could not balance the tube, almost certain it was magnetized. By just moving
Rich: Why do I get all your messages twice? Hanging up,hi? de Hans -- -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesti
Hello: Years ago in one of the British ham magazines there was a circuit where you discharged the reservoire cap in the hv with a thyristor that was in paralell. When there was flash-over in the pa t
I Know a guy in Finland who had, a few years ago, a couple of the original HEATH beryllium blocks. I would not touch and repair a block - very dangerous and poison. 73s de Hans SM5KI -- -- FAQ on WWW
Dr George: I really would reccommend the EMTRON DX1 amplifier recently used in the Pitcairn VP6BR expedition. The DX1 was send to Jukka from the manufacturer in VK-land and was in use for, I believe
Thank you very much - I thought my MAC went Amok. 73s de Hans -- -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.co
I have just returned from the Finnish Ham Summer Camp: Markku from elstar@sci.fi was there and he has a lot of Russian condensers to be used, as I believe, in tank circuits. Check with him. de Hans S
Hello all: I like to find what I am interested in here on amps where a lot of people have what I need. We over here have not the same big surplus market as for instance in the US. If I have something