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Total 61 documents matching your query.

21. Re: Topband: Kostas' point (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Thu, 18 Jan 2018 13:38:46 +0800
There is no real point of worrying about what the other guy is using.  We only can control our personal operation, and really have to leave the other end of the Q to manage theirs. 73/jeff/ac0c alpha
/archives//html/Topband/2018-01/msg00234.html (9,646 bytes)

22. Re: Topband: Kostas' point (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Thu, 18 Jan 2018 23:00:53 +0800
Another fellow pressed me on this.   What I should have said - that perhaps is more clear - goes like this. 1. Worry about your own operation --> because you can control it. 2. No point to worry abou
/archives//html/Topband/2018-01/msg00239.html (9,760 bytes)

23. Re: Topband: Straws in the wind, continued or, "Where's the DX?" (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Sun, 1 Apr 2018 21:20:57 +0800
There is good and bad with the FT8. The good is that it is bringing guys into the HF DX realm who never got active in DX because for whatever reason they felt they did not have a good DX station.  Th
/archives//html/Topband/2018-04/msg00010.html (11,654 bytes)

24. Re: Topband: 80/160? (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Wed, 18 Apr 2018 13:15:55 -0500
Vac relay works great.  Ran one just like that for several years. Be sure to use serious bypass/choke at the relay and then at the base for common mode on the line as the pickup will be huge. 73/jeff
/archives//html/Topband/2018-04/msg00097.html (8,003 bytes)

25. Re: Topband: cutting coax stubs for 80 meter 4-square (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Sun, 10 Jun 2018 22:28:11 +0800
The MFJ259 is a fine box but when you get to 80m with anything near a BC it's going to be problems.  In fact I discovered the hard way that even up on 20m the box can read funky if your antenna is bi
/archives//html/Topband/2018-06/msg00061.html (30,677 bytes)

26. Re: Topband: 160 sloper readings (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Sat, 18 Aug 2018 20:34:21 -0500
Unless you have no BC stations for 200 miles distant, making measurements with an MFJ259 on 160m is going to give you unreliable readings.  The overload threshold on that band is extreemly low. 73/je
/archives//html/Topband/2018-08/msg00084.html (7,860 bytes)

27. Re: Topband: antenna analyzers (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Fri, 12 Oct 2018 19:08:22 -0500
At this location, the VNWA is a bit squirly near the BC band but with a single L/C notch added at the device input (within the cal plane), it works fine. The AA-55 Zoom I have is immune and is the my
/archives//html/Topband/2018-10/msg00050.html (11,386 bytes)

28. Re: Topband: VP6D (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Fri, 26 Oct 2018 21:03:10 -0500
He was easy to work on 160m.  Excellent OP. But I've worked him now twice on 80m but the Q has not showed up either time.  Not sure if there is an 80m log problem, an eager SLIM or just a couple of b
/archives//html/Topband/2018-10/msg00218.html (8,074 bytes)

29. Re: Topband: Inverted L improvements - Part 3 (now with data) (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Mon, 21 Jan 2019 19:54:06 -0600
Todd, get on the contest and rock and roll.  I don't know of anyone on 160m who has not given their antennas an iterative workout over time.  Bet you will do just fine.  RX is the tougher nut anyway.
/archives//html/Topband/2019-01/msg00069.html (10,563 bytes)

30. Re: Topband: Inverted L improvements - Part 3 (now with data) (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Wed, 23 Jan 2019 16:08:42 -0600
I worked 160m for a few years when living in a townhome.  The antenna was a trap loaded attic mounted dipole that ran through holes in the ceiling and down the walls to the ground.  Had a lot of 160m
/archives//html/Topband/2019-01/msg00109.html (14,733 bytes)

31. Re: Topband: Inverted L improvements - Part 3 (now with data) (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Wed, 23 Jan 2019 19:14:13 -0600
Disconnect the other antenna.  Let it float. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com It made a pretty substantial difference in the measurements. The 1.5 SWR range is now only about 35 k
/archives//html/Topband/2019-01/msg00115.html (9,782 bytes)

32. Re: Topband: FT8 vs other modes - my numbers (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Sun, 3 Feb 2019 12:43:36 -0600
Tim, My take on the popularity is explained this way.  FT8 has an SNR advantage over CW of around 5 dB, PSK31 - about 10 dB and SSB of more than 15 dB.  So for a given set of link conditions, FT8 res
/archives//html/Topband/2019-02/msg00044.html (15,532 bytes)

33. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Mon, 4 Feb 2019 00:05:49 -0600
The last version of my elevated 40m 4-square (~2016-7?) was built with belden stuff that had the black coating all along the length.  I buffed it up and used crimp connectors.  Worked great. My reaso
/archives//html/Topband/2019-02/msg00063.html (13,173 bytes)

34. Re: Topband: 4 SQ To The Ground (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Mon, 4 Feb 2019 10:48:42 -0600
Got tired of the maintenance.   It was about 3-5' and was a pain in the neck for mowing.  Plus keeping tension on the lines etc was a hassle. With a 4sq, you pay in the end.  If it's elevated radials
/archives//html/Topband/2019-02/msg00067.html (8,802 bytes)

35. Re: Topband: V84SAA SR report 15 Feb - ANd final schedules of operation (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Fri, 15 Feb 2019 16:13:41 -0600
Brad what bearing were you pointing too? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 15-Feb-19 3:41 PM, Brad Denison wrote: I'll have to second VE9AA - signals in to southern NH on the 8
/archives//html/Topband/2019-02/msg00144.html (8,855 bytes)

36. Re: Topband: Voltage at top of vertical and scaling? (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Tue, 16 Apr 2019 19:01:54 -0500
Is this an intellectual exercise or Jim do you want to do something at the top of this vert - like hang a vac relay there to engage some 160m top hat cap loading wires? 73/jeff/ac0c alpha-charlie-zer
/archives//html/Topband/2019-04/msg00068.html (9,543 bytes)

37. Re: Topband: Voltage at top of vertical and scaling? (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Tue, 16 Apr 2019 19:42:09 -0500
I used a W1W relay at the top of mine for years without incident. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com 73 jim ab3cv Just for grins - did a EZNEC free space - perfect ground - with 80
/archives//html/Topband/2019-04/msg00070.html (10,049 bytes)

38. Re: Topband: RFI on TB (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Mon, 22 Jul 2019 22:15:59 -0500
Around here, lightning arrestors on these power cables are the prime candidate.  I have exactly the same issue here and every couple years have to go track down one that has started making racket ove
/archives//html/Topband/2019-07/msg00066.html (8,333 bytes)

39. Re: Topband: 160 (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Fri, 2 Aug 2019 20:34:23 -0500
This makes complete sense to me.  You are right - FTx is a different beastie and compared with RTTY, the latter takes a ton more HUMAN work to bag the week ones. 73/jeff/ac0c alpha-charlie-zero-charl
/archives//html/Topband/2019-08/msg00098.html (14,338 bytes)

40. Re: Topband: Inverted L - newbie questions (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Wed, 21 Aug 2019 11:36:05 -0500
An inverted L without radials is a random length wire and the measurements are of no meaning until there is a ground system to make up the other half of the antenna. But to Wes point, the 259 and big
/archives//html/Topband/2019-08/msg00233.html (9,429 bytes)


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