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Total 212 documents matching your query.

1. Topband: South America (our summer their winter) 160M opportunities (score: 1)
Author: Tim Shoppa <>
Date: Mon, 2 Jun 2014 14:41:30 -0400
Among the south american DXCC's I need to still work are the entities below. I thought I had worked PZ1AA in a 160 test this winter but that appeared to have been pirate operation. Anyone know of pla
/archives//html/Topband/2014-06/msg00006.html (6,954 bytes)

2. Re: Topband: Rig Question (score: 1)
Author: Tim Shoppa <>
Date: Tue, 17 Jun 2014 15:20:37 -0400
On CW, I have used all of the K3 (contest conditions at both supreme and cruddy locations), TS-590 (less trying conditions), and Ten-Tec Eagle (same receiver as Orion+RX366). All are ballpark same pr
/archives//html/Topband/2014-06/msg00143.html (15,625 bytes)

3. Re: Topband: Ferrite Cores (score: 1)
Author: Tim Shoppa <>
Date: Mon, 4 Aug 2014 18:03:53 -0400
Fair-Rite 2631803802 is the Amidon FT-240-31. Available at Mouser, Newark, Arrow, and other places. Mouser part # 623-2631803802. Mouser says they have 1589 of them in stock :-). I have a personal cr
/archives//html/Topband/2014-08/msg00023.html (8,772 bytes)

4. Re: Topband: Ferrite Cores (score: 1)
Author: Tim Shoppa <>
Date: Wed, 6 Aug 2014 12:45:22 -0400
HF and for EMI suppression. done shows typical transformers to be good 5kHz-50MHz: I have been using #73 binocular cores for all
/archives//html/Topband/2014-08/msg00054.html (13,154 bytes)

5. Re: Topband: anybody in Eu using JT-9 or JT-65 (score: 1)
Author: Tim Shoppa <>
Date: Tue, 12 Aug 2014 10:42:50 -0400
There's the band, and then there's folks using the band. Both have to line up! Important thing is that it is winter in VK :-). So more likely for VK's to be on topband than for EU's. I don't do JT-65
/archives//html/Topband/2014-08/msg00093.html (10,181 bytes)

6. Re: Topband: Modeling the proverbial "vertical on a beach" (score: 1)
Author: Tim Shoppa <>
Date: Thu, 14 Aug 2014 08:49:32 -0400
"Vertical on a beach" DXpeditions have a very different mindset about choosing operating hours and greyline openings, than other kinds of DXpeditions. Often they are also away from the RFI sources th
/archives//html/Topband/2014-08/msg00121.html (15,691 bytes)

7. Re: Topband: Skimmer calibration (score: 1)
Author: Tim Shoppa <>
Date: Mon, 18 Aug 2014 11:11:33 -0400
There's a lot of scatter in the dB measurements from skimmers. If I see dozens of spots graphed on the reversebeacon "spots comparison tool" then I can believe systemic differences like 3-5dB. But I
/archives//html/Topband/2014-08/msg00173.html (13,456 bytes)

8. Re: Topband: Skimmer calibration (score: 1)
Author: Tim Shoppa <>
Date: Tue, 19 Aug 2014 12:06:49 -0400
I quickly noticed that some skimmers seem to have more effective antenna systems than others. More than S/N, I look at kinda the breadth and depth of where I'm spotted. On 160M, GW8IZR and DL1A are w
/archives//html/Topband/2014-08/msg00191.html (11,091 bytes)

9. Re: Topband: Switching Pennants (score: 1)
Author: Tim Shoppa <>
Date: Wed, 20 Aug 2014 10:20:38 -0400
Most common K9AY relay-switching configuration involves a single transformer, with relay-switching at the high impedance side, and just inches of run from the transformer to the relays to the loops.
/archives//html/Topband/2014-08/msg00222.html (10,269 bytes)

10. Re: Topband: Outdoor rope suggestions (score: 1)
Author: Tim Shoppa <>
Date: Tue, 2 Sep 2014 16:03:54 -0400
I am not using multi-hundred pound counterweights, but only 15 or so pounds. I have been very satisfied with the big-wheel laundry line pulleys from home depot:
/archives//html/Topband/2014-09/msg00023.html (9,532 bytes)

11. Re: Topband: Beverage Question (score: 1)
Author: Tim Shoppa <>
Date: Sat, 20 Sep 2014 11:03:38 -0400
I have had excellent success with the clothesline pulleys. They are clearly not life-rated or mariner quality, but for ham antenna use I strongly recommend them. I have had several in trees/sky for 5
/archives//html/Topband/2014-09/msg00108.html (9,747 bytes)

12. Re: Topband: Remote pre-amp power source (score: 1)
Author: Tim Shoppa <>
Date: Fri, 26 Sep 2014 08:29:20 -0400
If the pre-amp point is readily accessible and in a not easy spot to get consistent sunlight (e.g. dense forest), it sometimes makes more economic sense to use dry cells and/or rechargeable batteries
/archives//html/Topband/2014-09/msg00157.html (8,525 bytes)

13. Re: Topband: [Bulk] Re: 160 GP Choke (score: 1)
Author: Tim Shoppa <>
Date: Tue, 30 Sep 2014 12:36:34 -0400
The 0.75" #75 clamp-on is 0475176451 and circa $15. By my connibulations it'll be a really close squeeze to get 5 turns of RG-6 through there. I think 5 turns of RG-58 could happen. The 2.4" #31 core
/archives//html/Topband/2014-09/msg00174.html (10,122 bytes)

14. Re: Topband: Help put Haiti on topband (score: 1)
Author: Tim Shoppa <>
Date: Tue, 7 Oct 2014 15:56:40 -0400
Is KC0W still planning to be in Haiti on low bands this winter? I think N5JR and a PY have been there on 160M in 2014 so far this year too (I worked them other bands but not 160) Tim N3QE ___________
/archives//html/Topband/2014-10/msg00020.html (10,365 bytes)

15. Re: Topband: TX relays (score: 1)
Author: Tim Shoppa <>
Date: Thu, 9 Oct 2014 08:57:23 -0400
Mike, I would be concerned about using these small relays for non-resonant antenna switching where the impedance at the switch point may be wildly away from 50 ohms. This is the relay I use to switch
/archives//html/Topband/2014-10/msg00032.html (9,585 bytes)

16. Re: Topband: TX relays (score: 1)
Author: Tim Shoppa <>
Date: Fri, 10 Oct 2014 09:46:23 -0400
My observation (given the large number of silver cadmium relay contacts I've seen at large contest stations, as well as more limited use at my little station) is that the large amounts of power being
/archives//html/Topband/2014-10/msg00054.html (10,134 bytes)

17. Re: Topband: The Stew (score: 1)
Author: Tim Shoppa <>
Date: Sun, 19 Oct 2014 13:10:57 -0400
Rick - you were very loud here. Also out on the left coast was K7RAT coming in very clearly too. I think you two were the only "coasters" I found. I had a fair number of 7 pointers not on the coast.
/archives//html/Topband/2014-10/msg00092.html (9,681 bytes)

18. Re: Topband: QRP ARCI 160 meter sprint (score: 1)
Author: Tim Shoppa <>
Date: Fri, 21 Nov 2014 10:43:26 -0500
Thank you James! I do not think I have done the QRP ARCI events in the past but I will give this 160M one a try. Wednesday right before Thanksgiving actually works out well for me. This will be my fi
/archives//html/Topband/2014-11/msg00104.html (8,988 bytes)

19. Topband: Haiti on 160M this weekend?, HC2RMT/8, 9K2HN (score: 1)
Author: Tim Shoppa <>
Date: Wed, 26 Nov 2014 09:52:37 -0500
I note a lot of Haiti activations for CQ WW. Are any known to be active on 160M? Also looking forward to V26K on 160M as it would be a new one for me on 160M. Last night HC2RMT/8 had a wonderfully lo
/archives//html/Topband/2014-11/msg00141.html (6,819 bytes)

20. Re: Topband: [time-nuts] Minicircuits 10% discount in December (score: 1)
Author: Tim Shoppa <>
Date: Thu, 27 Nov 2014 14:14:19 -0500
The 2873000202 73 material binocular core, I buy those by the hundreds from Newark and hand them out like a human Pez dispenser at local radio club meetings. They are amazing things. Not only do I us
/archives//html/Topband/2014-11/msg00155.html (8,781 bytes)

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