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Total 394 documents matching your query.

1. [Amps] Im Back! (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 4 Oct 2014 12:55:02 -0400
In case anyone missed me that is (-; My old email provider that Ive had since ' 93 was aquired by another and it took me from 9/26 to get resubscribed to the list; I guess admin is kinda sporadic her
/archives//html/Amps/2014-10/msg00013.html (6,384 bytes)

2. [Amps] LK-500ZB (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 4 Oct 2014 13:22:10 -0400
Since when is the current 3-500ZG have a mu of 200? Looks to still be 130 from what Ive found at RFP and RFConcepts.The only higher ones Im aware of were the Amperex.Ive been very pleased with the RF
/archives//html/Amps/2014-10/msg00014.html (6,619 bytes)

3. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 8 Oct 2014 11:36:34 -0400
I wouldnt use smaller than a string of 1N5408's as they have a much higher surge current capability as the rather obsolete 1N4007 in the era of much higher filter cap C and dirty AC utility lines. Th
/archives//html/Amps/2014-10/msg00025.html (11,499 bytes)

4. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 10 Oct 2014 11:53:52 -0400
For the same reason I dont need a 600hp car on the local streets.....I cant use that power. If a 1500-2500W amp cant handle a 400A surge then the fuse better blow before the transformer. The only pla
/archives//html/Amps/2014-10/msg00034.html (10,415 bytes)

5. Re: [Amps] Source for replacement PS caps (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 10 Oct 2014 20:24:03 -0400
The word going around is they are counterfeit Chinese caps. Try and find an Internet presence for them. Carl KM1H K4POZ sells 390uF/450V/105°C capacitors at $2.75 each plus shipping. They are not scr
/archives//html/Amps/2014-10/msg00044.html (10,861 bytes)

6. Re: [Amps] Source for replacement PS caps (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 10 Oct 2014 20:28:57 -0400
You dont need anything that high in capacity, the 270uF 450V carried by Ameritron and also in the MFJ catalog will do just fine. About $13.50 last time I looked. Carl KM1H Availability is probably go
/archives//html/Amps/2014-10/msg00045.html (10,792 bytes)

7. Re: [Amps] Source for replacement PS caps (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 10 Oct 2014 20:31:00 -0400
What is the minimum order to get your own name on caps from China? Carl KM1H -- Original Message -- From: "Chris Fox" <ni4ldipole@gmail.com> To: <steve@nr4m.com> Cc: "Amps" <amps@contesting.com> Sent
/archives//html/Amps/2014-10/msg00046.html (13,020 bytes)

8. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 11 Oct 2014 18:48:02 -0400
Dear all, I wonder why the diode selection is so totally overblown here. ** IMO there is a balance point between using obsolete diodes and overkill. Very few will be suggesting wholesale replacement
/archives//html/Amps/2014-10/msg00053.html (18,458 bytes)

9. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 13 Oct 2014 12:22:22 -0400
I use the 1N4007 for simple things such as replacing the 0Z4, 6X5, 6X4, 12X4 in auto radios as well as a few test equipment, house radios and others that are known for 6X4 and 6X5 problems. For items
/archives//html/Amps/2014-10/msg00056.html (19,445 bytes)

10. Re: [Amps] SOURCE FOR 3CX800'S (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 15 Oct 2014 18:22:53 -0400
Since when are they plentiful? Last I looked they were becoming extinct as Russian surplus ran out. If they are in current production that would be great but converting a triode amp to tetrodes can b
/archives//html/Amps/2014-10/msg00065.html (8,832 bytes)

11. Re: [Amps] SOURCE FOR 3CX800'S (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 15 Oct 2014 21:50:42 -0400
What do they mean by low grid current? I would assume that for medical amps they require less drive and Ig for the same output as higher Ig tubes but at lower IMD. Im just surprised they dont quantif
/archives//html/Amps/2014-10/msg00068.html (9,604 bytes)

12. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 11:12:23 -0400
After spending way too much time trying to seperate useful and useless comments and form a logical response I gave up. Suffice it to say that the real world of tube type ham amps uses the 1N5408 almo
/archives//html/Amps/2014-10/msg00069.html (40,041 bytes)

13. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 11:17:13 -0400
Correct; Ive used them in some of my HF QRP projects from decades ago and they do well. Even for the 1939 Meissner Signal Shifter and the 1934 National FB-XA which I still use. Ive DXCC on 8 bands wi
/archives//html/Amps/2014-10/msg00070.html (9,071 bytes)

14. Re: [Amps] 10A10 high voltage diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 13:14:30 -0400
What are you building that needs that current capacity? Carl KM1H I see high voltage diodes on Amazon listed as 10A10, 1 KV at 10 amp, anyone know if these are what they claim? I have used 6A10's and
/archives//html/Amps/2014-10/msg00075.html (8,505 bytes)

15. Re: [Amps] 10A10 high voltage diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 14:03:47 -0400
Translation: You really do mean to be disrespectful. I dont NEED to know anything but if I can offer qualified advice having the details seems to be sorta required.... What have you ever offered to t
/archives//html/Amps/2014-10/msg00078.html (10,095 bytes)

16. Re: [Amps] 10A10 high voltage diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 15:22:26 -0400
Nope, nothing wrong with that as already determined. Im sitting fat as I bought two reels of 2500 each 1N5408's some 20 years ago for $20 at a local belly up auction. Im almost to the end of the firs
/archives//html/Amps/2014-10/msg00081.html (10,449 bytes)

17. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 17:13:16 -0400
If you knew as much about amp history as you may not know about other ham items you would know that Alpha has used potted diode blocks since the 1970's. And Ive replaced my share as likely have other
/archives//html/Amps/2014-10/msg00090.html (12,074 bytes)

18. Re: [Amps] 10A10 high voltage diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 17:13:24 -0400
CARL > Translation: You really do mean to be disrespectful. No. Translation: I was suggesting as politely as possible that you were. ** There is no such thing as being politely arrogant and demeaning
/archives//html/Amps/2014-10/msg00091.html (14,276 bytes)

19. Re: [Amps] 10A10 high voltage diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 20:42:32 -0400
Ive really mellowed since retiring in 2002! You should have known me in my prime but maybe that is likely why I had a lot of instructor duties in the USN Reserves and at civilian jobs. Trying to teac
/archives//html/Amps/2014-10/msg00099.html (9,966 bytes)

20. Re: [Amps] HV Diodes (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 16 Oct 2014 21:23:35 -0400
What other currently manufactured full legal limit amplifiers exist? I'm really not up to date on which are still being made! I thought that Alpha is pretty much the best known. At least here in Chil
/archives//html/Amps/2014-10/msg00100.html (10,271 bytes)

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