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References: [ +from:km1h@jeremy.qozzy.com: 394 ]

Total 394 documents matching your query.

281. Re: [Amps] Shipping a heavy HV Transformer (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 21 Jan 2018 10:13:24 -0500
I got billed extra for just a plywood box by UPS. They told me the cardboard is to keep drivers and distribution apes from getting splinters!!! Carl Thanks everyone on the reflector and direct , I ha
/archives//html/Amps/2018-01/msg00123.html (10,532 bytes)

282. Re: [Amps] Commander HF 2500 (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 24 Jan 2018 19:01:56 -0500
Since the PS board is in a dead end under the RF chassis it gets little to no air flow. Ive serviced many of those amps, replaced out of tolerance equalizing resistors, and most of the caps had exces
/archives//html/Amps/2018-01/msg00139.html (8,825 bytes)

283. Re: [Amps] Series C in amp output (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 16 Feb 2018 21:34:21 -0500
Often tubes can be very long lived as has been reported many times. A few years ago I had a well used Tempo 2000 (Johnson Thunderbolt II) in for service that still had its original 1962 3-400Z's at f
/archives//html/Amps/2018-02/msg00038.html (11,668 bytes)

284. Re: [Amps] Collins 505/FRT-24 Amplifier (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 24 Feb 2018 10:15:47 -0500
Here is a lot more info from that seller 2 years ago. Not something for someone afraid to dig into it. http://forums.qrz.com/index.php?threads/collins-505-found.533113/ I'm not a big fan of the look
/archives//html/Amps/2018-02/msg00052.html (8,113 bytes)

285. Re: [Amps] Gettering tubes? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 28 Mar 2018 09:52:01 -0400
Probably near forever; Ive never found one that needed it using a hi-pot tester. However it wont hurt to run the filament only for a few hours , with air, before applying HV. Carl How long can Eimac
/archives//html/Amps/2018-03/msg00070.html (7,880 bytes)

286. Re: [Amps] LK-550ZC fair price, tube testing (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 28 Mar 2018 10:15:49 -0400
$1200-1500 including the PAC 5. Anything less is a give away, even the LK-500ZC can go for that range. Without special equipment one way to regetter is to run the filaments and bias only on the power
/archives//html/Amps/2018-03/msg00071.html (10,977 bytes)

287. Re: [Amps] Amps Digest, Vol 186, Issue 9 (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 1 Jul 2018 16:06:16 -0400
They will sell you the complete AL-80B switch which I believe is the same as the A. Carl Ameritron most likely has them. Thanks 73 Jim W7RY Looking for the 160 meter wafer for an al80a ... anyone hav
/archives//html/Amps/2018-07/msg00000.html (9,681 bytes)

288. Re: [Amps] AL-80A - Pi/Pi-L Switch Wafer Failure due to arcing (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 28 Jul 2018 09:40:13 -0400
Ameritron will sell you a complete switch only, Electroswitch will not deal with an individual and the switch is the same as the old Centralab 2500 series. Those switches were used in all sorts of co
/archives//html/Amps/2018-07/msg00085.html (10,390 bytes)

289. Re: [Amps] Equalising the air flow on Commander 2500 tubes/replacement neoprene chimneys (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 28 Jul 2018 09:51:24 -0400
Is that a Command built or Palstar built amp? A very visible Palstar change is the air holes added to the front face of the RF chassis to cool the PS board which was easily fried and a royal PITA to
/archives//html/Amps/2018-07/msg00086.html (11,848 bytes)

290. Re: [Amps] Big HV Supply (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 1 Aug 2018 11:28:48 -0400
Amp Supply used a few variations of the external transformer with enclosure but none were 70#, most were about 50#. The ones with relays were added by Bill Edwards, K4BWC (SK), at home who was their
/archives//html/Amps/2018-08/msg00004.html (8,662 bytes)

291. Re: [Amps] Lube for roller inductor (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 1 Aug 2018 11:32:17 -0400
Why not contact MFJ who builds theirs as well as Oren Elliot Products plus Multi Tech Industries who builds "big" ones. Carl I would suggest one of the CAIG DeOxit products, e.g. DeOxit 5. Bert VE3NR
/archives//html/Amps/2018-08/msg00005.html (9,558 bytes)

292. Re: [Amps] Lube for roller inductor (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 1 Aug 2018 18:01:04 -0400
Stan, I wasnt aware that OEP quit production, I used to buy many some years ago. Another place to check is Cardwell Condenser who is now part of Viking and they still make the old Johnson 229 series.
/archives//html/Amps/2018-08/msg00008.html (10,341 bytes)

293. Re: [Amps] Lube for roller inductor (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 1 Aug 2018 20:41:41 -0400
Aluminum for the coil??? I kind of doubt that but Ive been wrong a few times....... The Murch I remember only went to 80M also. Most tuners have insuffficient C to work well at 80/160 when those were
/archives//html/Amps/2018-08/msg00010.html (13,942 bytes)

294. Re: [Amps] Big HV Supply (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 5 Aug 2018 15:46:55 -0400
All the big Amp Supply transformers were Dahl, some had a tapped HV winding for the LK-550 and LK-800 and others were custom non advertised for the 3CPX800A7 LK-800 You would be surprised at how many
/archives//html/Amps/2018-08/msg00016.html (10,572 bytes)

295. Re: [Amps] Big HV Supply (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 8 Aug 2018 10:44:54 -0400
The LK-550 runs three 3-500's and cooling would likely limit power as it is a fan. Ive had them up to 2200W or so with 150W drive....nothing to brag about tho! Ive built several LK-800's for 6M EME t
/archives//html/Amps/2018-08/msg00022.html (10,697 bytes)

296. Re: [Amps] 47 Ohm 5 watt (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 12 Aug 2018 14:36:44 -0400
Yeah, it might take another 30+ years for that to happen if they are good quality.. -- ORIGINAL MESSAGE --(may be snipped) Antique Electronic Supply has new carbon composition resistors in stock. REP
/archives//html/Amps/2018-08/msg00032.html (9,225 bytes)

297. Re: [Amps] 47 Ohm 5 watt (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 12 Aug 2018 14:34:28 -0400
You dont need 5W. Just BUY a pair of Ohmite 47 Ohm 2W OY series from Mouser as others do. They have no minimum and if you call in the order ask for USPS First Class Mail so you dont get hit with a $8
/archives//html/Amps/2018-08/msg00033.html (11,884 bytes)

298. Re: [Amps] 47 Ohm 5 watt (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 17 Aug 2018 18:41:55 -0400
If you stick to the OP needs for a SB-220 family amp and reuse or duplicate the coil my statement stands. YOU DO NOT NEED 5W If you want to drift over to a much bigger amp then do so on another threa
/archives//html/Amps/2018-08/msg00037.html (9,698 bytes)

299. Re: [Amps] KPA1500 in QSK mode (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 16 Oct 2018 21:20:33 -0400
A single 3CX/3CPX800A7 will replace a pair of 8874's and is almost a plug in swap.You will need a new filament transformer. https://frank.pocnet.net/sheets/140/3/3CX800A7.pdf Carl Larry: The 76a is n
/archives//html/Amps/2018-10/msg00058.html (14,200 bytes)

300. Re: [Amps] Commander II Amp Parts (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 19 Oct 2018 14:03:39 -0400
There should be a name on the back and likely Jewel or Modutec which is now part of Jewel. Carl Greetings, I'm looking for a meter for a Commander II amp. Somehow mine has developed a cracked lense.
/archives//html/Amps/2018-10/msg00074.html (8,995 bytes)

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