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Total 284 documents matching your query.

21. Re: [Amps] Heathkit HA10 linear (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 4 Aug 2006 19:28:38 -0700
Oh.. And a 3B28 is a rectifier tube. 73 Jim W7RY Hello All Is there anyone out there that is using a Heathkit HA 10 linear with a solid state transceiver? I have one that has been upgraded to a 3000
/archives//html/Amps/2006-08/msg00160.html (7,371 bytes)

22. Re: [Amps] Henry 2KD-5 120 Hz Hum (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Mon, 7 Aug 2006 20:21:09 -0700
The filaments are in series. It would take 10V @ 15 amps. I'm not sure using DC would be a good test. You need the center tap for the cathode return. 73 Jim W7RY A crude test could be to feed both fi
/archives//html/Amps/2006-08/msg00270.html (10,019 bytes)

23. Re: [Amps] Svetlana 3CX400A7 Tubes Needed (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 11 Aug 2006 19:58:18 -0700
Also known as an 8874. I'm not sure Svetlana they made many of them. If they made any at all. Perhaps some prototypes? 73 Jim W7RY I am about to start modifying a MLA2500 and need info on where to bu
/archives//html/Amps/2006-08/msg00427.html (7,780 bytes)

24. Re: [Amps] Svetlana (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 11 Aug 2006 20:03:49 -0700
Also, Svetlana is out of business many years ago. There are several folks on EBay selling Russian tubes but none of them are Svetlana brand. The all have the original Russian insignias on them. Perha
/archives//html/Amps/2006-08/msg00428.html (7,815 bytes)

25. Re: [Amps] Mechanical question (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 11 Aug 2006 20:12:57 -0700
Why not use rubber hose? Jim W7RY Hello all, I recieved the cold plate (liquid cooling plate that attaches to the heat spreader) in for the linear project I'm working on. It has 1/8 inch copper tubin
/archives//html/Amps/2006-08/msg00430.html (8,438 bytes)

26. Re: [Amps] Checking for IMD (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 11 Aug 2006 20:23:57 -0700
The SM-220 and the ol' Heathkit SB614 do the same thing as these "RF Splatter View" devices. The Heath and Kenwood even have a built in dual tone generator. 73 Jim W7RY The Collins 30L1 has such a me
/archives//html/Amps/2006-08/msg00432.html (11,094 bytes)

27. Re: [Amps] Fwd: Re: Svetlana (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Sat, 12 Aug 2006 09:09:31 -0700
The attachment was deleted. Jim W7RY Note: forwarded message attached. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listin
/archives//html/Amps/2006-08/msg00443.html (7,128 bytes)

28. Re: [Amps] 3CX800A7 Orientation (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Thu, 17 Aug 2006 19:47:39 -0700
Yes it can. I have worked on several broadcast transmitters that use the 8877 mounted horizontally. The same manufacturer also makes a transmitter that uses the 3CX800 in the same configuration. 73 J
/archives//html/Amps/2006-08/msg00536.html (8,261 bytes)

29. Re: [Amps] EIMAC vs. SED 3CPX800A7 (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Thu, 24 Aug 2006 21:52:35 -0700
Has anyone had experience with the SED brand of tubes? Jim W7RY EIMAC is on backorder for their 3CPX800A7 tubes until October and my other choice is the Russian built SED which spun off of Svetlana a
/archives//html/Amps/2006-08/msg00650.html (7,158 bytes)

30. Re: [Amps] Parasitic supressor SIDE BAR (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Wed, 30 Aug 2006 21:19:27 -0700
Oh stop! Anyone else think a seperate reflector should be created, such as parasitics@contesting.com, or maybe nichrome@contesting.com? Just a thought? Doug - N9XTF __________________________________
/archives//html/Amps/2006-08/msg00833.html (7,214 bytes)

31. Re: [Amps] pwr supplies (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 1 Sep 2006 14:27:15 -0700
How about: http://www.tripplite.com/ or how about: http://www.tripplite.com/products/inverters/related_dcpower.cfm 73 Jim W7RY --Original Message-- From: amps-bounces@contesting.com [mailto:amps-boun
/archives//html/Amps/2006-09/msg00023.html (7,327 bytes)

32. Re: [Amps] Astrons catching on Fire (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Sat, 2 Sep 2006 09:15:14 -0700
I have used, sold and repaired LOTS of Astron supplies. Mountain top repeater sites included. I have never experienced a "fire" inside. Nor have I seen a circuit board get hot or overheat. I have had
/archives//html/Amps/2006-09/msg00038.html (9,018 bytes)

33. Re: [Amps] Henry 3K-A Step Start Resitor Cone (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Wed, 6 Sep 2006 07:58:51 -0700
It's actually called a cone heater. Here is a source: http://www.akinsun.com/Accessories4.html 73 Jim W7RY Bob, It's actually an infrared heating element. Bob In a message dated 9/5/2006 9:43:14 P.M.
/archives//html/Amps/2006-09/msg00122.html (8,875 bytes)

34. Re: [Amps] Henry 3K-A Step Start Resitor Cone (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Wed, 6 Sep 2006 08:13:25 -0700
I have seen them at a well stocked farm supply store. 73 Jim W7RY The Heater elements in my 4K-Ultra were straight round elements (now since sold) they were different than the elements in for say the
/archives//html/Amps/2006-09/msg00124.html (10,005 bytes)

35. Re: [Amps] TL-922 Cooling (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Sun, 10 Sep 2006 07:10:58 -0700
As I remember from the one I owned, that is the designed air flow direction. Drawing cool air from all around the amplifier chassis and then out the back. 73 Jim W7RY Anybody own a Kenwood TL-922? Ca
/archives//html/Amps/2006-09/msg00170.html (7,886 bytes)

36. Re: [Amps] US source for TRIODE board (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Thu, 21 Sep 2006 12:00:05 -0700
I believe RF parts may sell them. Why not just order if from the manufacturer: http://www.ifwtech.co.uk/g3sek/boards/triode/triode-order.htm 73 Jim W7RY Looks like Toms Tubes is not accepting orders.
/archives//html/Amps/2006-09/msg00269.html (7,336 bytes)

37. Re: [Amps] Newbie question (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Thu, 28 Sep 2006 07:49:45 -0700
Oil filled caps in a 2K4 and they are probably fine. 73 Jim W7RY Hi all - I have come across what may be the deal of the year, or maybe the turkey of the year. I have found a Henry 2K-4A amp that has
/archives//html/Amps/2006-09/msg00339.html (7,989 bytes)

38. Re: [Amps] Newbie Question II (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Fri, 29 Sep 2006 09:45:18 -0700
Open (intermittent) grid resistors. Very common on SB-200s They are 33 Ohm. 73 Jim W7RY Hi again, everybody -- Thanks to all who answered. Now if I can just get my hands on the amp, I'll give them a
/archives//html/Amps/2006-09/msg00359.html (8,837 bytes)

39. Re: [Amps] High Temp Silicon Rubber -- Where to buy? (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Mon, 30 Oct 2006 12:32:54 -0800
very high temp. It works great. It's available by the foot. 73 Jim W7RY Hello! wondering where to find high temp silicon rubber for a ceramic tube chimney? Would hate to use the wrong rubber - "HI!"
/archives//html/Amps/2006-10/msg00302.html (7,955 bytes)

40. Re: [Amps] High Temp Silicon Rubber -- Where to buy? (score: 1)
Author: "W7RY" <w7ry@centurytel.net>
Date: Mon, 30 Oct 2006 17:13:11 -0800
I think he is looking for the material to make the chimney.... Not to simply glue it together? Jim W7RY Hi Ken Any Auto parts store should have it. The color of the silicon tells the heat range and I
/archives//html/Amps/2006-10/msg00310.html (9,034 bytes)

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