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References: [ +from:almacottage@btopenworld.com: 5 ]

Total 5 documents matching your query.

1. [Amps] sb220 zener diode problems (score: 1)
Author: "almacottage" <almacottage@btopenworld.com>
Date: Fri, 8 Jul 2005 21:55:12 +0100
hi all. could someone give me some ideas on the problem i have encountered on one of my heathkit SB220 amps please . basically i swapped tubes last week from a pair of eimac to a pair of amperex 3-50
/archives//html/Amps/2005-07/msg00064.html (9,586 bytes)

2. Re: [Amps] AL-811H etc (score: 1)
Author: "almacottage" <almacottage@btopenworld.com>
Date: Sat, 1 Oct 2005 11:59:22 +0100
i have the AL811 with 3 tubes , i directly swapped the 811a tubes for 572B tubes and run the high voltage at 1900v [ie in the red segment of HT meter] . i found that on these amps the original anode
/archives//html/Amps/2005-10/msg00004.html (8,982 bytes)

3. Re: [Amps] sb200 warc bands (score: 1)
Author: "almacottage" <almacottage@btopenworld.com>
Date: Wed, 23 Nov 2005 18:26:06 -0000
hi . the sb200 will run on 12m from the 10m bandswitch position and on 17m in the 15m position . power may be slightly less than on the bands selected but will still be over 600w with 90w drive . 30m
/archives//html/Amps/2005-11/msg00465.html (7,152 bytes)

4. [Amps] 8877 grid current going negative etc (score: 1)
Author: "almacottage" <almacottage@btopenworld.com>
Date: Tue, 6 Dec 2005 17:30:52 -0000
hi all. i wonder if someone would have any ideas as to an intermittent occurrence i see on one of my 8877 6m amplifiers . i have one running at 4.5kv off load which is seeing the problem occur but im
/archives//html/Amps/2005-12/msg00051.html (9,196 bytes)

5. Re: [Amps] Amps Digest, Vol 37, Issue 1 (score: 1)
Author: "almacottage" <almacottage@btopenworld.com>
Date: Sun, 1 Jan 2006 14:08:27 -0000
mike that cap is 10kv 2200pf as you thought it was . i use one in my SB220 as a dc blocking cap but its 1000pf @ 10kv , i drive it with 150w in the 2400v setting for 1kw out and also 150w drive in 3k
/archives//html/Amps/2006-01/msg00008.html (31,087 bytes)

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