Search String: Display: Description: Sort:

Results:

References: [ +from:apolloeme@live.com: 85 ]

Total 85 documents matching your query.

41. [Amps] Tubes, made in the USA, in the olden days; Films? (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 30 Aug 2010 07:20:07 -0700
I wonder if there are archived anywhere some actual films of an old GE, Mullard, Philco, RCA, Amperex, etc tube making process. Some inside documentary or training film, that could be found and poste
/archives//html/Amps/2010-08/msg00458.html (14,478 bytes)

42. Re: [Amps] Tubes, made in the USA, in the olden days; Films? (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 30 Aug 2010 09:46:09 -0700
The 833s I saw years ago in their transmitter cabinets, at an AM broadcast station had no chimneys or ducts to cool them just a lot of general blower air around them. The mounts were also very simple
/archives//html/Amps/2010-08/msg00465.html (9,667 bytes)

43. [Amps] HV Interconnects RF Decks to PS (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 12 Sep 2010 03:11:16 -0700
Very good productive discussions on the topic. I am a firm proponent of a shielded HV cable for safety, and accompanied by the design considerations being discussed. What I have seen out there, in th
/archives//html/Amps/2010-09/msg00111.html (8,853 bytes)

44. Re: [Amps] SHV connectors great, but where to find coax? (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 14 Sep 2010 05:47:27 -0700
Sam, Your HV encounter confirms my long held concern about the Millen HV plastic connector. Appears to not be "hermetic sealed" with respect keeping the HV inside, if a hand is ever brushed over the
/archives//html/Amps/2010-09/msg00166.html (13,975 bytes)

45. [Amps] Sourcing Sheet Aluminum (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 14 Sep 2010 20:37:27 -0700
Another post on the reflector recently asked about best alloys of aluminum to use in Ham/Amp related projects, a good question, that I dont know the answer to, just that I remember T-6 alloy is hard
/archives//html/Amps/2010-09/msg00177.html (8,694 bytes)

46. Re: [Amps] Why are 833s so Expensive (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 28 Sep 2010 06:28:58 -0700
Sheesh...... Must be a market for these things. It would be interesting to see proof of how many have sold so far. IMHO this is proof that there are an awful lot of people with too much money. Probab
/archives//html/Amps/2010-09/msg00341.html (10,952 bytes)

47. Re: [Amps] NCL-2000 Meters (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 28 Sep 2010 09:09:22 -0700
A good website for NCL 2000 enthusiasts: http://www.google.com/imgres?imgurl=http://ncl-2000.n9efj.net/Stien3NCL2K.png&imgrefurl=http://ncl-2000.n9efj.net/users.html&usg=__Yqx7EmqdgSAAb1vJ5OJ8B0T5iMc
/archives//html/Amps/2010-09/msg00343.html (9,162 bytes)

48. [Amps] Switching Supplies for High Current Filaments (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 5 Oct 2010 07:34:41 -0700
Are there any sensibly priced switching supplies (even surplus) that are small and light, that could power some of the QRO tubes with high current filaments? Would, say, a 5v, 30A switcher which coul
/archives//html/Amps/2010-10/msg00029.html (7,279 bytes)

49. Re: [Amps] Help identifying tubes (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 28 Nov 2010 22:33:48 -0800
If they are not 4-400As, tetrodes, (which can be used as grounded grid triodes, plug in replacemets for the 3-500Z. in a pinch.) Will not put out the same RF without circuit changes.....they are iden
/archives//html/Amps/2010-11/msg00537.html (9,187 bytes)

50. [Amps] Old Alpha Amp from storage to bring on line. (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 13 Mar 2011 17:49:26 -0700
I am going down to Monterey to inspect an old amp, possibly purchase. I saw it in operation about 15 years ago, and remember it as being a golden color anodized front panel, wide, and not tall, [Not
/archives//html/Amps/2011-03/msg00108.html (8,191 bytes)

51. [Amps] Pineapple UHF SSPA Board/heat Sink Assys, BLF 872, BLF 861A, MRF377, LQ801 (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Tue, 29 Mar 2011 18:43:58 -0700
Saturday, Pineapple Technology near our Radio Club's coffee shop had a big house cleaning. They are a big commercial Solid StateTV transmitter Manufacturer. So I went over to see what was being haule
/archives//html/Amps/2011-03/msg00270.html (8,122 bytes)

52. [Amps] Alpha 76A 3 Holer; 10 meter add (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 3 Apr 2011 09:54:39 -0700
Gentlemen: On the Alpha 76A, Gray metal front Plate, 3 holer, 8874 == 3CX400 Eimac Tubes, Two questions, how does one add a ten meter switch function, (I am told it may only require a mechanical stop
/archives//html/Amps/2011-04/msg00028.html (7,132 bytes)

53. Re: [Amps] Alpha vs Henry (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Wed, 6 Apr 2011 01:07:51 -0700
Gentlemen: If you are pushing for enhanced reliability in a Ham manufactured amp, run above its ratings, say a Heathkit SB 220, and focus on the heat in the transformer being a power limiting, or a l
/archives//html/Amps/2011-04/msg00209.html (10,958 bytes)

54. Re: [Amps] Alpha vs Henry (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Fri, 8 Apr 2011 15:43:13 -0700
This is an interesting one... can someone point their IR thermometer gun at a room temp object and then take a hair dryer on hot, and blow it across the field of view, and report results? Tnx Best Re
/archives//html/Amps/2011-04/msg00306.html (10,671 bytes)

55. [Amps] Alpha 76 Amp De-Mothball (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 10 Apr 2011 15:50:24 -0700
Well today, after running the cathodes hot for a day or so, with with B+ disconnected in order to degas/getter the trio of 8874s in a an Alpha 76. Today I put it together for a smoke/bang test with a
/archives//html/Amps/2011-04/msg00323.html (8,145 bytes)

56. [Amps] Power handling of an SMA (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 25 Apr 2011 05:59:49 -0700
Does anyone know the spec for power handling capability for SMA connectors, at 1.296 ghz? Also, the often found hardline interconnect cable for that connector, that I would say is about 3 mm in diame
/archives//html/Amps/2011-04/msg00514.html (6,705 bytes)

57. [Amps] Vacuum Packaging, storage for Glass tubes (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Thu, 12 May 2011 06:20:52 -0700
Some time back, I asked a similar question, and got good, but not conclusive opinions...partly due to a not having good wording of my question. I looked up vacuum on Wikipedia, and got a huge amount
/archives//html/Amps/2011-05/msg00081.html (8,890 bytes)

58. Re: [Amps] bottom cover for Henry 2KD-5 (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Sun, 11 Sep 2011 07:54:19 -0700
Here is a series of photos and commentary on the 2KD 5. He mentions a solid bottom cover but I am not sure if he refers to the cabinet cover or another, different cover. Google under Images, 2KD-5 yo
/archives//html/Amps/2011-09/msg00031.html (8,887 bytes)

59. Re: [Amps] Alpha 76a (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 12 Sep 2011 12:00:23 -0700
I received a 76A about 6 months ago, as a gift from a OOM who I helped a lot when he was active. A 3 holer, that had been stored for some time, I "gettered" it, slowly, bringing it back to life, with
/archives//html/Amps/2011-09/msg00039.html (9,854 bytes)

60. [Amps] Alpha 76A; Variant ? Industrial Transformer (score: 1)
Author: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 12 Sep 2011 19:23:03 -0700
Another discovery on my "mystery" Alpha 76A. It is suspected by one or more of the brain trust here, that the transformer was possibly taken from Alpha Industrial inventory, MRI related units. The tr
/archives//html/Amps/2011-09/msg00050.html (7,939 bytes)

Current List: 41 - 60
Page: [1] [2] [3] [4] [5]
This search system is powered by Namazu