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41. [AMPS] Have Cake & Eat it too (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Thu, 9 Sep 1999 08:30:25 -0700; Hi Jonathan, Wattmeters are most accurate at their designed input and output impedance (50 ohms for our communications stuff). Even a BIRD is not accurate for forward power when a high SWR is present; /archives//html/Amps/1999-09/msg00044.html (11,101 bytes)
42. [AMPS] Grounding Dummy Load ?? (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 21 Sep 1999 16:34:59 -0700; Hi Jim, You are probably experiencing poor isolation on the antenna switch. To roughly check this, listen to those weak signals while switched to the DL, then disconnect all the antennas and see if y; /archives//html/Amps/1999-09/msg00207.html (10,211 bytes)
43. [AMPS] Where to read Reflected Power (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 27 Sep 1999 17:56:33 -0700; Hi Jim, I understand the frustration! I too, have these same problems. Different points on the transmission line the SWR will vary. Nowadays I just "blast away" into the antenna! As you know, I use t; /archives//html/Amps/1999-09/msg00267.html (14,805 bytes)
44. [AMPS] Need advice (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 10:19:15 -0700; Hi Phil, The HENRY 3K Premier or ULTRA series are QSK with rugged vacuum relay (160-10M incl WARC). No worries about high power and SWR frying weak PIN diodes. No worries about high spikes of RF comi; /archives//html/Amps/1999-09/msg00281.html (8,911 bytes)
45. [AMPS] Where to read Reflected Power (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 10:29:34 -0700; No interference, but you state the obvious. Certainly I was referring to what his meter is reading as this is what he has to measure with, and yes put your wattmeter/SWR bridge at the antenna to see; /archives//html/Amps/1999-09/msg00282.html (9,447 bytes)
46. [AMPS] Re: swr (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 10:37:31 -0700; With all of this talk about SWR, let me say don't worry too much about it. You MAY wish to try different coax lengths in order to have your transceiver be able to deliver full power to your amplifier; /archives//html/Amps/1999-09/msg00283.html (10,577 bytes)
47. [AMPS] Need advice (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 12:01:09 -0700; I believe it is powered in a normal way. It sounds as though you are about to make a point, let me preempt that by saying thousands of units with hundreds of thousands of hours and contacts show the; /archives//html/Amps/1999-09/msg00292.html (8,497 bytes)
48. [AMPS] Amplifier for cw only-question. (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 13:09:58 -0700; Boy I hope you don?t need a flak jacket. However, I see you must have been reading for a while! I would agree that class C for CW mode is more efficient, that subject just doesn?t come up anymore. As; /archives//html/Amps/1999-09/msg00294.html (10,809 bytes)
49. [AMPS] Where to read Reflected Power (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Tue, 28 Sep 1999 13:36:53 -0700; Hi Pete & Jon, (note for others: antenna and feedline stuff below, if your amplifier only eyes get burned reading this, please delete to save your self permanent damage!) In the ARRL handbook 1998 (p; /archives//html/Amps/1999-09/msg00297.html (12,204 bytes)
50. [AMPS] explain this one (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Sun, 1 Aug 1999 14:21:59 -0700; Hi Rich, Rich replied: ? To find out, I would have to walk out to the breezeway. . How about naming some good manufacturers and some not so good manufacturers, in your opinion, before I take the walk; /archives//html/Amps/1999-08/msg00006.html (8,699 bytes)
51. [AMPS] explain this one (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 2 Aug 1999 01:55:24 -0700; Hi Lane and Phil, Here is a picture of the HENRY solution to this problem in the 3K Premier (160-10M) series. I had a good picture of this and whipped up a quick page. See http://radiodan.com/Henry/m; /archives//html/Amps/1999-08/msg00020.html (12,311 bytes)
52. [AMPS] Clipperton L on 10 Meters (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 2 Aug 1999 10:24:46 -0700; Tom, What is the advatage of a long input RF cable? I suppose it's OK to make a loop with any excess. What is "long" relative to band used? 73, Dan Magro W7RF, (President WARC 1999, member SCDXC, SCC; /archives//html/Amps/1999-08/msg00037.html (9,918 bytes)
53. [AMPS] Henry 5K info needed (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Sun, 15 Aug 1999 11:15:18 -0700; See below. 73, Dan Magro W7RF, (President WARC 1999, member SCDXC, SCCC) Manufacturers Rep & Distributor for HENRY RF Power Amplifiers. www.radiodan.com <http://www.radiodan.com> ??? RFpower@radiodan; /archives//html/Amps/1999-08/msg00265.html (8,997 bytes)
54. [AMPS] RJ-1 relay (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Sun, 4 Jul 1999 10:46:02 -0700; Hi Martin, Your rugged 30 year old HENRY 2K-3 could benefit from a relay upgrade by using either: RJ-1 or HC-1 vacuum relay which will need 26 VDC to switch and one of our current guardian relays (to; /archives//html/Amps/1999-07/msg00042.html (11,401 bytes)
55. [AMPS]n4kw@citrus.infi.net RJ-iA relay contact-life on CW? (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 5 Jul 1999 14:09:31 -0700; Wait a minute! Who is correct on these radio switching times? According to Rich , the relays in HENRYS switch too slowly to prevent hot switching "which is not quick enough to prevent hotswitching wi; /archives//html/Amps/1999-07/msg00071.html (14,144 bytes)
56. [AMPS] PTT and LTT (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 5 Jul 1999 22:42:23 -0700; "? Why cater to lock-to-talk miscreants? Lock-to-talk is unnecessary. With SSB VOX, amp tubes cut off in a fraction of a second during pauses and between words. . " There are many ways of operating a; /archives//html/Amps/1999-07/msg00083.html (9,250 bytes)
57. [AMPS] AMPLIFIER LOADING (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 12 Jul 1999 15:38:26 -0700; Hi Bob, Maximum or "heavier" loading occurs when C2 (load) plates are less meshed. Less loading = MORE load C More loading = LESS load C As Tom W8JI noted, proper and safer tune-up occurs when all t; /archives//html/Amps/1999-07/msg00227.html (7,609 bytes)
58. [AMPS] recommendations on hooking up 115vac converter (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Thu, 15 Jul 1999 09:36:25 -0700; Let me add my voice to Dave when I say that your post was NOT amplifier related at all. Why can't you simply admit that it was for the purpose of trying to find out how to run HF mobile with a tube r; /archives//html/Amps/1999-07/msg00306.html (9,094 bytes)
59. [AMPS] Good Meter vs CRT was Hot wire.... (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Wed, 28 Jul 1999 11:19:56 -0700; Rich: Yes, Dan Magro sells BIRD wattmeters, you better not be calling in to question my integrity as to the results of those tests. What I posted is what I saw. BIRD doesn't need me to lie to bolster; /archives//html/Amps/1999-07/msg00574.html (12,016 bytes)
60. [AMPS] Purchase Recommendation? (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Wed, 2 Jun 1999 07:12:26 -0700; At the plate voltage HENRY uses (4400 VDC) I have had never had any problems with my 1987 tube which is still in service at full output today in my HENRY 3K Premier. 73, Dan Magro W7RF, (President WA; /archives//html/Amps/1999-06/msg00045.html (7,948 bytes)

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