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Total 116 documents matching your query.

61. Re: [Amps] Alpha 9500 vs. Acom 2000A questions (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sat, 03 Dec 2016 19:08:33 -0800
My only wish list on the ACOM 2000A is that it had narrower auto tune segments. On 160M they are 25KHz wide, I would prefer 10KHz for my HiQ antenna. I believe the Alpha will auto tune if it wants to
/archives//html/Amps/2016-12/msg00044.html (10,307 bytes)

62. Re: [Amps] Collins 30S1 costs (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sat, 03 Dec 2016 20:01:09 -0800
$1k TO $1.5k - Paul At 07:09 PM 12/3/2016, mike via Amps wrote: What is a nice working condition 30S1 worth? _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2016-12/msg00047.html (6,989 bytes)

63. Re: [Amps] Alpha 9500 vs. Acom 2000A questions (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sun, 04 Dec 2016 14:53:53 -0800
Autotune on the ACOM 2000A does not vary with drive level. Autotune does not tune for maximum output, but it does tune for a specific load impedance. For example autotune for the ACOM allows you to o
/archives//html/Amps/2016-12/msg00081.html (11,574 bytes)

64. Re: [Amps] The cost of amplifiers, radios (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Mon, 05 Dec 2016 21:31:54 -0800
My main amp is an ACOM2000A. But when I need instant on for a QUICK qso I use my backup amp the L4-B. I run 3400V on the plates in the L4-B and comfortably get 1500W on SSB and CW. I have the origina
/archives//html/Amps/2016-12/msg00119.html (12,689 bytes)

65. Re: [Amps] The cost of amplifiers, radios (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Tue, 06 Dec 2016 09:01:06 -0800
An even better reason than "the Donald" to move to Canada. My ideal amp would be and automated 3 x 3-500Z, 160m to 6m. $500 total for brand new replacement tubes. - Paul ____________________________
/archives//html/Amps/2016-12/msg00141.html (8,995 bytes)

66. Re: [Amps] The cost of amplifiers, radios (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Tue, 06 Dec 2016 11:49:14 -0800
I run an SB220 modified for 6M (single band). 1300W PEP out. - Paul Three tubes in parallel ?? 73 es HH, Dick, W1KSZ _______________________________________________ Amps mailing list Amps@contesting.
/archives//html/Amps/2016-12/msg00144.html (9,884 bytes)

67. Re: [Amps] The cost of amplifiers, radios (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Tue, 06 Dec 2016 13:16:44 -0800
That's PEP, so more like 1000W average input. I've been using it for 5 years now during the summer Sporadic E season and no problems so far. - Paul Better save your nickels for that new power xfmr yo
/archives//html/Amps/2016-12/msg00148.html (11,293 bytes)

68. Re: [Amps] Drake L4B to 6 Meters Help (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Mon, 12 Dec 2016 10:07:29 -0800
I have converted an SB220 and a TL922 for 6M. Both will produce 1300W PEP 6M. ( FYI I have converted an SB200 and that gave 600W PEP) A stock L4-B will easily produce 1KW PEP on 10m and should do the
/archives//html/Amps/2016-12/msg00311.html (9,885 bytes)

69. Re: [Amps] Drake L4B to 6 Meters Help (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Mon, 12 Dec 2016 19:51:03 -0800
Michelle Did you say that you are running the 2 tubes a zero bias and have about 100mA idle current. I think it should be more like 200mA in the SSB position. This would suggest that either your high
/archives//html/Amps/2016-12/msg00340.html (9,332 bytes)

70. Re: [Amps] Drake L4B to 6 Meters Help (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Thu, 15 Dec 2016 07:38:00 -0800
Here's the results from my modified SB220 Plate voltage 2500V under load (SSB mode) Plate current .75A Grid 230mA Drive 75 watts Output 1100 watts (key down, not pep) Voltage and current readings are
/archives//html/Amps/2016-12/msg00374.html (9,406 bytes)

71. [Amps] GS-35B tube issue (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sun, 25 Dec 2016 19:30:22 -0800
I have a home brew GS-35B amp built around 5 years ago. I run about 4KV on the plate. I purchased 2 NOS tubes at the same time. Initially when I built the amp I needed around 40V of bas voltage for i
/archives//html/Amps/2016-12/msg00441.html (7,136 bytes)

72. Re: [Amps] GS-35B tube issue (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Mon, 26 Dec 2016 13:52:05 -0800
You are a little light on details with regard to hours, drive, output, and bands of operation - probably for a good reason. ;) Steve Probably on the existing tube less than 100 hours, drive 10W of 10
/archives//html/Amps/2016-12/msg00445.html (8,199 bytes)

73. Re: [Amps] FCC Denies Expert Linears' Request for Waiver of 15 dBRule (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Wed, 28 Dec 2016 18:59:43 -0800
What gives you the impression that SPE chose to ignore it? All of their amplifiers shipped to the US have attenuators that limit the gain to 14.5dB. - Paul ___________________________________________
/archives//html/Amps/2016-12/msg00493.html (9,779 bytes)

74. Re: [Amps] GS-35B tube issue (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Wed, 28 Dec 2016 21:12:41 -0800
the above even applies. Do you measure at least 12.6 vac on the fils ?? Yes Did the gain of the tube change at all ? Not noticeably. - Paul _______________________________________________ Amps maili
/archives//html/Amps/2016-12/msg00503.html (7,789 bytes)

75. Re: [Amps] Alpha 87A Fault 17 (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sat, 31 Dec 2016 10:53:20 -0800
The diodes in the 87A output power/swr measuring circuit are a common failure. - Paul I have the computer hooked to the CPU. Because of the difficulty in finding the cause of Fault 1, I have had to r
/archives//html/Amps/2016-12/msg00545.html (20,047 bytes)

76. Re: [Amps] Audio/RF compression (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Thu, 12 Jan 2017 10:32:07 -0800
Yes, certainly a possibility. But have you looked at latency? This may or may not be a problem. Definitely a problem if you monitor your audio in the headphones, which I do 100% - Paul ______________
/archives//html/Amps/2017-01/msg00237.html (8,910 bytes)

77. Re: [Amps] Audio/RF compression (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Thu, 12 Jan 2017 10:33:10 -0800
Yes, certainly a possibility. But have you looked at latency? This may or may not be a problem. Definitely a problem if you monitor your audio in the headphones, which I do 100% - Paul ______________
/archives//html/Amps/2017-01/msg00238.html (8,340 bytes)

78. Re: [Amps] new SS amps at dayton (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Fri, 28 Apr 2017 15:05:43 -0700
SPE will have their new Expert 1.5K FA SS amp also. - Paul KW7Y At 07:37 AM 4/28/2017, Jim Thomson wrote: OMs 600S has been out for quite some time. Rated at 600w pep and also 600 W CCS cxr. Their ne
/archives//html/Amps/2017-04/msg00399.html (8,831 bytes)

79. Re: [Amps] 144 MHz GS35B update (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Mon, 01 May 2017 19:17:36 -0700
Take one more turn off and you could probably get 600W out with 0W drive. - Paul At 01:50 PM 5/1/2017, N1BUG wrote: There we go. After reviewing pictures of several other amplifiers using this tube I
/archives//html/Amps/2017-05/msg00028.html (9,081 bytes)

80. [Amps] Why a voltage doubler ? (score: 1)
Author: Paul Baldock <paul@paulbaldock.com>
Date: Sat, 13 May 2017 08:22:18 -0700
Why did early amplifiers use voltage doublers rather than twice the secondary turns and a full wave bridge? - Paul _______________________________________________ Amps mailing list Amps@contesting.co
/archives//html/Amps/2017-05/msg00124.html (7,254 bytes)

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