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21. Topband: VF - It is what it is (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 29 Mar 2007 04:19:23 -0700 (PDT)
Tom, what I suspect is the fact that the foam is not tough and that the center conductor can slowly ooze away from it's center alignment, especially if the coax is strongly coiled or bent... High tem
/archives//html/Topband/2007-03/msg00155.html (7,183 bytes)

22. Topband: Multiple Ground Systems (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 16 Aug 2007 05:03:18 -0700 (PDT)
I have always disbelieved the "bond the crossing radials" old wives tail, for good electrical reasons... These crossing radials have differing RF phase and voltage on them... Bonding them together is
/archives//html/Topband/2007-08/msg00027.html (8,673 bytes)

23. Topband: rigs for top band (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 21 Aug 2007 05:28:36 -0700 (PDT)
Bottom line...when the '2000 was announced, I started putting money aside to buy one. After using one for a couple hours, I changed my mind. I'll keep my MK V a little longer. ** I was also tempted w
/archives//html/Topband/2007-08/msg00068.html (7,485 bytes)

24. Topband: 160m portable operating (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 28 Aug 2007 05:07:20 -0700 (PDT)
Well, with the trees and some open space, I would opt for either an inverted L or a vertical Tee for transmit.... Some aluminum fence wire for a bunch of short radials underneath the vertical... In f
/archives//html/Topband/2007-08/msg00127.html (7,872 bytes)

25. Topband: Antenna Arsenals (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 29 Aug 2007 05:19:56 -0700 (PDT)
Eddie, Let me urge you to find another spool of wire so you can make a reflector underneath the dipole just off the ground... Now there is a real cloud burner... Case in point: Field day - at my farm
/archives//html/Topband/2007-08/msg00131.html (8,161 bytes)

26. Topband: Reality check request (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 29 Aug 2007 05:28:58 -0700 (PDT)
The antenna gurus will jump in here... Your results are about what I expect... First the nearby vertical is relatively short on 160 meters so the coupling to the antenna lead is going to be low... Se
/archives//html/Topband/2007-08/msg00132.html (7,014 bytes)

27. Topband: Project Boxes for 160 meter Preamplifiers? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 14 Sep 2007 05:12:49 -0700 (PDT)
Plastic boxes outdoors need to be spray painted - Krylon works - to block UV from turning the plastic brittle within months... denny / k8do -- Got a little couch potato? Check out fun summer activiti
/archives//html/Topband/2007-09/msg00093.html (6,537 bytes)

28. Topband: Project Boxes for 160 meter Preamplifiers? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Sat, 15 Sep 2007 07:55:55 -0700 (PDT)
That is good to know... It is a problem with brevity that topics get a bit of spin... I assumed that those following this thread 'understood' I was referring to plastic not intended for outdoor longe
/archives//html/Topband/2007-09/msg00100.html (7,584 bytes)

29. Topband: Beverage advice to bend or not? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Sat, 15 Sep 2007 07:58:44 -0700 (PDT)
Do not bend it... The pattern will go to heck... Live with what length you can get in a straight line - if you want it to act like a Beverage antenna... If you just want 'anything' to listen with the
/archives//html/Topband/2007-09/msg00101.html (6,577 bytes)

30. Topband: Beverage feed line...too long? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 18 Sep 2007 05:26:43 -0700 (PDT)
Alessio, Yes, the Beverage can have a surprising noise level, but the ratio of signal to noise will be improved... I sometimes have to reduce my RF gain when listening to the Beverage... What transfo
/archives//html/Topband/2007-09/msg00114.html (7,727 bytes)

31. Topband: 3B7C in the deep south (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 20 Sep 2007 04:40:48 -0700 (PDT)
Well, that's great Cecil... However, for some if us it is not that ducky on 160... Here in mid michigan (43.42 North) I can hear an occasional dit or dah from him, and that is all.. He is not copyabl
/archives//html/Topband/2007-09/msg00125.html (7,206 bytes)

32. Topband: VE3 Conditions 2-XI-07 (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 5 Nov 2007 08:39:26 -0800 (PST)
Eddie, try being a few hundred more miles to the West, so that you are at the in-between hops position in the black RF hole of Michigan... I get to listen to you working EU and K9DX working EU and th
/archives//html/Topband/2007-11/msg00015.html (7,575 bytes)

33. Topband: 160 RX lash-up (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 6 Nov 2007 05:16:56 -0800 (PST)
Depends on how much signal isolation you need.. Technically, having each item inside a tightly RF sealed container and using coax and coax relays to choose the RF path through them will give the best
/archives//html/Topband/2007-11/msg00020.html (6,733 bytes)

34. Topband: Binocular Cores & Radials (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Sun, 11 Nov 2007 05:16:14 -0800 (PST)
I see no one has replied, so you are stuck with me... NO, do not connect the far ends of radials to anything... Add more radials inbetween the exisiting, if you need more efficiency... GL denny / k8d
/archives//html/Topband/2007-11/msg00057.html (6,976 bytes)

35. Topband: pre-selector/filter (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 15 Nov 2007 04:32:52 -0800 (PST)
I am assuming that this preselector is passive... If it is an active device, forget it - all it is going to do is overload and create intermod... Now, if it is passive, then it is likely to help... T
/archives//html/Topband/2007-11/msg00119.html (7,227 bytes)

36. Topband: Silver Plated Conductor (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 20 Nov 2007 04:23:45 -0800 (PST)
Silver plating might <emphasize 'might'> make a difference on 10 meters, other than that, forget it... If you are determined to make a difference, then replace that wimpy wire with quarter inch coppe
/archives//html/Topband/2007-11/msg00161.html (6,868 bytes)

37. Topband: enameled wire source (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 29 Nov 2007 04:24:17 -0800 (PST)
Unless there is an issue with the pH of your dirt why don't you get a quarter mile of aluminum fence wire for less than $20? denny / k8do -- Never miss a thing. Make Yahoo your homepage. ____________
/archives//html/Topband/2007-11/msg00249.html (6,824 bytes)

38. Topband: de n7dd (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 4 Dec 2007 04:45:06 -0800 (PST)
I never know what my score really is. I just send in the log and let them worry about it. ** BINGO... Thanks for saying what I have been thinking these past weeks as I have been reading the microdiss
/archives//html/Topband/2007-12/msg00030.html (7,605 bytes)

39. Topband: Vertical radials (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 7 Dec 2007 04:55:20 -0800 (PST)
Model the plate a few inches above the ground... The way I do it it looks like a comb - bunch of parallel, straight wires close together... Just play around with it and you will get the idea... It is
/archives//html/Topband/2007-12/msg00076.html (7,292 bytes)

40. Topband: 1/8 wave vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 27 Dec 2007 04:49:18 -0800 (PST)
but I've had so many 160 QSOs that were just on the margin, I can't help but think that 1dB shouldn't be neglected. ** Right, and on both ends.... Last night for example - every time I called CQ DX o
/archives//html/Topband/2007-12/msg00196.html (7,136 bytes)

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