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References: [ +from:dhearn@ix.netcom.com: 203 ]

Total 203 documents matching your query.

141. [TowerTalk] OR-2800P Rotator reliability (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Tue, 12 Jan 1999 21:38:10 -0800; I should have mentioned in my initial posting that any replies directly to me will be private.I do plan on a summary to several who requested it but will not use names. Thanks, Dan, N5AR -- FAQ on WW; /archives//html/Towertalk/1999-01/msg00221.html (6,967 bytes)
142. [TowerTalk] Prop Pitch Speed Up (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 14 Jan 1999 20:51:00 -0800; The prop pitch motor used by most hams has a gear reduction of 9576:1 .I modified one per the QST article in 1950. I have used it to rotate first a 4 el 20 on a 42 ft boom. I later used it to rotate; /archives//html/Towertalk/1999-01/msg00266.html (12,165 bytes)
143. [TowerTalk] Prop Pitch Speed Up (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 14 Jan 1999 22:35:46 -0800; My friend, Jack Kennedy, W5DJ has analyzed the small prop pitch motor gear train. He found that the output gear train ratio (eliminated with this mod ) is 9 1/3 .He has a Curtis Wright manual for the; /archives//html/Towertalk/1999-01/msg00267.html (12,185 bytes)
144. [TowerTalk] Selsyns and prop pitch (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Tue, 19 Jan 1999 05:41:02 -0800; Mike: I have been using a modified prop pitch motor to turn first a large 20m 4 el and later a full size 2 el 40 with no windmilling. I use a heavy duty wall switch triac w rotary knob feeding a step; /archives//html/Towertalk/1999-01/msg00333.html (10,410 bytes)
145. [TowerTalk] SO-239 covers (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Tue, 19 Jan 1999 10:30:59 -0800; There are small brass covers with rubber gaskets available from the mfrs of connectors. Usually come w a small chain which attaches to SO 239 mtg screw to prevent losing them when uncover the SO 239.; /archives//html/Towertalk/1999-01/msg00346.html (9,434 bytes)
146. [TowerTalk] sheared bolts (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Tue, 26 Jan 1999 18:10:35 -0800; re your 3rd problem, if the bolt ends are about flush w the case, you can use a handy grinder w a thin abrasive cut off blade turned on its side to make a slot in the bolt end. Then, use a screwdrive; /archives//html/Towertalk/1999-01/msg00475.html (9,891 bytes)
147. [TowerTalk] AC operated relays for ant switching (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Wed, 27 Jan 1999 21:37:58 -0800; I have a home built ant sw using relays w 110 a.c. coils. They work fine and do not overheat with 24 v.d.c. on the coils. This, of course is much safer than using the 110 a.c. I use a back connected; /archives//html/Towertalk/1999-01/msg00506.html (9,401 bytes)
148. [TowerTalk] AC operated relays for ant switching (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 28 Jan 1999 07:59:47 -0800; Good point Tom. Even though the 1N4000 series diodes are inefficient at r.f. frequencies, we have long wire leads to them which act as antennas. It would be good practice to bypass them and I will do; /archives//html/Towertalk/1999-01/msg00516.html (9,773 bytes)
149. [TowerTalk] rotor bolts (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Fri, 29 Jan 1999 15:12:17 -0800; Ed, I have been looking for a source of bolts with the safety wire holes in them, both standard and metric. Also stainless safety wire. Where do you get them?. 73, Dan, N5AR -- FAQ on WWW: http://www; /archives//html/Towertalk/1999-01/msg00558.html (8,565 bytes)
150. [TowerTalk] TH-3 Problems (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Sat, 05 Dec 1998 15:56:41 -0800; Are the drainholes on your traps facing down? 73, Dan, N5AR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST; /archives//html/Towertalk/1998-12/msg00066.html (8,293 bytes)
151. [TowerTalk] Re: 2 el beam question (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Sat, 05 Dec 1998 20:11:29 -0800; Frank, I prefer the reflector for higher feed point impedance and better bandwidth. Check W4RNL web page for lots of info on this w curves. ;73, Dan. N5AR -- FAQ on WWW: http://www.contesting.com/tow; /archives//html/Towertalk/1998-12/msg00070.html (8,058 bytes)
152. [TowerTalk] Re: 2 el beam question (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Sat, 05 Dec 1998 20:14:11 -0800; Sorry, should have mentioned that I have built both 40m and 20m 2 el yagis using refl and split Driver fed dired\ct w coax thru a balun. Swr under 2.. 73, Dan. N5AR -- FAQ on WWW: http://www.contesti; /archives//html/Towertalk/1998-12/msg00071.html (8,057 bytes)
153. [TowerTalk] Antenna positioning in the wind (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Mon, 07 Dec 1998 21:01:36 -0800; For minimum wind loading on the tower/mast I favor element tips to wind (boom broadside to wind). This also minimizes element flexing and/or vibration . Have had several element tips fatigue crack an; /archives//html/Towertalk/1998-12/msg00091.html (10,453 bytes)
154. [TowerTalk] electric winch for UStower MA550 (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Fri, 11 Dec 1998 07:54:49 -0800; I have heard that people have used a large electric drill to turn the handle shaft on hand winches. Sounds like it would work ok and it would be easily removable by loosening the chuck. 73, Dan, N5AR; /archives//html/Towertalk/1998-12/msg00153.html (9,965 bytes)
155. [TowerTalk] Re: towertalk (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Sat, 12 Dec 1998 08:48:29 -0800; You are right Ted. The guys who do this typically use the big drill motors with the two handles on them. They also are geared down to very low speeds. I think the twist on the operator would be no wo; /archives//html/Towertalk/1998-12/msg00172.html (8,890 bytes)
156. [TowerTalk] RADIO CONTROLLED GARAGE DOOR OPENER (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Wed, 16 Dec 1998 11:09:16 -0800; Info on this on RFI reflector at Contesting.com. 73, Dan N5AR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUE; /archives//html/Towertalk/1998-12/msg00238.html (7,917 bytes)
157. [TowerTalk] Alliance HD-73 (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 05 Nov 1998 10:19:31 -0800; I am trying to help a new ham at a distant location troubleshoot a direction indicator problem (no indication). Neither of us has a schematic or terminal ID info. Can someone help with info re what i; /archives//html/Towertalk/1998-11/msg00110.html (7,032 bytes)
158. [TowerTalk] Allliance HD-73 (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 05 Nov 1998 18:26:56 -0800; Thanks to all. I have plenty of info now and offer of schematic by fax tmw. 73, Dan, N5AR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrati; /archives//html/Towertalk/1998-11/msg00122.html (6,715 bytes)
159. [TowerTalk] aiming a rotor: true vs. magnetic (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Tue, 10 Nov 1998 10:34:23 -0800; Great tip Brian. The link also leads you to another location for obtaining lat and long if you enter city name or zip code. I have needed both lat/long and magnetic declination, now have both in a mi; /archives//html/Towertalk/1998-11/msg00266.html (10,262 bytes)
160. [TowerTalk] ss u-bolts source (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Thu, 03 Sep 1998 07:18:04 -0700; J.C.Whitney company, a very large mail order auto parts company, shows S.S. muffler clamps in their catalogs. Their prices are usually very competetive and service has been fast on things I have orde; /archives//html/Towertalk/1998-09/msg00086.html (7,275 bytes)

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