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Re: Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 06/24/2020 20:00-21:00
#cal-reminder
Hello Nate The Dstar guys use the pi star dashboard. I’m not sure if it supports all star? 73 Johnny ACØBQ
On Wed, Jun 24, 2020 at 5:56 PM Nate Bargmann <n0nb@...> wrote: * On 2020 24 Jun 15:01 -0500, main@4SQRP.groups.io Calendar wrote: --
Check out the 4SQRP website at 4sqrp.com
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Re: Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 06/24/2020 20:00-21:00
#cal-reminder
* On 2020 24 Jun 15:01 -0500, main@4SQRP.groups.io Calendar wrote:
** NEW * Wednesday evening DMR Voice Net will be at (Thursday) 0300Is there a bridge from this TG to AllStar? I asks as I know some exist and I just got an AllStar node (51932) configured and connected to my 440 repeater. I'd check in as my schedule allows and possibly Mike, AC0I, who has been to Oazarkcon in the past. If not, could someone consider such a bridge? 72, Nate -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819
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Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 06/24/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 24 June 2020, 20:00 to 21:00, (GMT-05:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm central time on 7.122 +-. QRM
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Random Wire Tuning - Take 2
Dave W0DCX
After reviewing the previous thread on this topic, I felt somewhat uneasy about my contribution to the discussion. I felt as if my reporting became somewhat desultory. So, I have done some more analysis and would like to share it along with some additional context. Keep in mind, I am trying to optimize a wire antenna for DIRECT use with my KX2 while NOT using my 9:1 unun. When I used the unun I can get just about any length wire to tune okay. So I am trying to create a minimal operating system here.
The original study under discussion used a 72-foot wire. Why did I select this length? For one thing, according to the random wire antenna links, one of which was shared by another contributor, 71-72 feet is suggested as one of the preferred lengths in order to avoid 1/2 wavelength multiples on any common HF band. 1/2 wave multiples present high impedances to the transceiver. The second reason I selected 72 feet was that it is exactly the distance from my transceiver to the high branch of a tree in my backyard where I have a nylon haul line installed. This length of antenna wire allows me to get the distal end of the antenna as high as possible (33 feet), all the way up to the branch. Well, 72 feet worked really well on 30 meters, and if I was going to work just 30 meters this is the antenna I would haul up the tree. Great SWR, great tuning, and as high as possible. BUT there were tuning issues for me on other important bands like 20 meters and 40 meters. So today I tried something a little different. I decided to trade-off the maximum antenna height for a more useful antenna length, one that might tune better on more bands. I selected a 50-foot wire which was able to get the distal end of the wire up to a height of about 28 feet. I used my 29-foot counterpoise wire in conjunction with this antenna. Below is a Table showing my results from NanoVNA measurements and actual KX2 ATU tuning results. The bottom line is that the 50-foot wire was quite workable on all the bands I tested - EXCEPT FOR 30 METERS where my 72-foot wire excelled. I can live with that. Also, except for 10 meters where reactance was slightly inductive, reactances all on other bands were capacitive. The big caveat is that I do not fully understand or trust what the NanoVNA is telling me. But I am presenting the numbers as raw data and also some resulting impedance calculations I performed. I just want to put the numbers out there and see if they make sense to anyone else. Perhaps the VNA is not functioning accurately on all frequencies. Perhaps I still not yet know how to use it properly. Also, I understand that using different lengths of counterpoise or changing the counterpoise positioning relative to ground and the antenna wire may have impacts on the results. Well, here is my 50-foot wire antenna Table from this morning. (Excel document as an attachment, too). While futzing with things I made two QSOs on 40 meters - Florida and Georgia. Your mileage may vary. 73, Dave W0DCX
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Re: FW: W4OP
Link goes to a ISP in SW Colorado.
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73 de KEoZUW - John
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Re: Field Day Operation remotely as a group
Tony Scandurra K4QE <k4qe@...>
No. Only contesting clubs participating in contests like the ARRL DX Contest need to be on the ARRL Contest Club List. Despite the fact that clubs are listed in the Field Day listings, there is no official “club competition” in Field Day. Why? Because Field Day is not a contest!
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Re: Field Day Operation remotely as a group
J.K. Wright
Only if you are able to operate as a club with a club call. The variant for this year only is that members can operate independently and ARRL will tabulate results by club name. In non virus years they don't do this.
On Wed, Jun 24, 2020, 9:42 AM Bill Lamm <kd9mdl@...> wrote: Dosen't the club need to register for field day and state the club name for field day thus defining the exact name to be used by us from our home locations?
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Re: Field Day Operation remotely as a group
Dosen't the club need to register for field day and state the club name for field day thus defining the exact name to be used by us from our home locations?
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Re: Field Day Operation remotely as a group
Tony Scandurra K4QE <k4qe@...>
The intent of the statement in the FAQ is to avoid club names where there is no uniqueness.
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For instance, there are two clubs in North Carolina with the common acronym “RARS”. Obviously, they need to make them unique by using: Raleigh ARS and Rowan ARS That is what is meant by “avoiding”.
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Re: Field Day Operation remotely as a group
J.K. Wright
I believe avoiding = no However, it is a free country..you can do however you like and live with consequences.
On Wed, Jun 24, 2020, 8:13 AM Tony Scandurra K4QE <k4qe@...> wrote:
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Re: Field Day Operation remotely as a group
Tony Scandurra K4QE <k4qe@...>
I am amazed how many people re-interpret this detail...
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It does not say “without” or “no” abbreviations or acronyms. The quote directly from the FAQ says: "all club participants must enter the club’s official name exactly the same, avoiding abbreviations or acronyms.” Consider this: Podunk Amateur Radio Club and Timbuktu Amateur Radio Club - or - Podunk ARC and Timbuktu ARC The only unique part of the names is “Podunk” and “Timbuktu”. Therefore, it makes no sense not to use an acronym in the common part of the name. In fact, abbreviating “Amateur Radio Club” using ARC greatly reduces the chance of a spelling error (think of how many times have you seen people misspell “amateur” as “amatuer”?). It is also easier to see the difference between the two when the abbreviation for the common part is used. 73, Tony K4QE
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Re: FW: W4OP
Dean LaClair
On Wed, Jun 24, 2020, 02:48 AG1P Ron <ag1p@...> wrote:
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Re: Field Day Operation remotely as a group
John Kirby
Field Day 2020 ARRL important log detail http://www.arrl.org/news/arrl-contest-program-issues-field-day-2020-faq One of the most important detail added in these FAQ’s is that ... ...your club affiliation needs to be entered without abbreviations or acronyms... To be included in the club aggregate score each club name submitted must be identical in spelling and case. 72 73 John N3AAZ
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FW: W4OP
AG1P Ron
This came into the Moderator email address. If anyone can help this person, please contact him at the email address below. 72 - Ron - AG1P 4SQRP Volunteer Webmaster
From: RTSA [mailto:memarcecker@...]
I'm KE2BP and I'm looking for a W4OP loop or parts for one. I can't get them from Par electronics, lnr precision, or vibroplex. I'm looking to get this second hand. My email is memarcecker@... is any way you can post this in your classifieds for me I would be grateful.
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Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 06/24/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 24 June 2020, 20:00 to 21:00, (GMT-05:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm central time on 7.122 +-. QRM
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Re: The mysteries of tuning a random wire
great idea to write an article. I'm in. Dr. Don W4BWS
God Bless All Ham Radio does not make the world go round. Ham Radio is what makes the ride worthwhile.
On Mon, Jun 22, 2020 at 4:36 PM Mike Malone <kd5kxf@...> wrote:
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Re: The mysteries of tuning a random wire
Mike Malone
John, I agree. I need to hear from Jim and the others in this thread that haven't emailed me first. Jim N5IB has been a guiding influence on antennas for me, ever since I heard a presentation he gave. Good stuff gentlemen. Mike KD5KXF
On Tue, Jun 23, 2020 at 11:17 AM John Nicholas <stnick@...> wrote:
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Re: The mysteries of tuning a random wire
As a new Ham, got my Tech and General Ticket Mar 14, this has been one of the best things to read and re read that I have seen since I started studying for the exams in January. I felt it impacted more then just tuning a random wire.
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Thanks, getting in an article form, even cleaned up email exchange would be great. de KEoZUW John
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Re: The mysteries of tuning a random wire
J.K. Wright
A small 49:1 transformer solves a lot of. Most any mismatched impedance divided by 49 can be easily tuned.
On Tue, Jun 23, 2020, 9:51 AM Dave W0DCX <cwqrp73@...> wrote: Mike,
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Re: The mysteries of tuning a random wire
Dave W0DCX
Mike,
Okay from me. I only wish I could have arrived at a definitive answer to my original question. Even so, I learned a lot from the discussion and maybe others will also. I plan to continue trying to understand and optimize my random wires in this fashion - it is fun and challenging. The final result may be that there are too many variables and influences on measurements and therefore an empirical approach is best - i.e., just try stuff until something seems to work. Dave W0DCX
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