Re: Topband: Topband Digest, Vol 243, Issue 16

Hello A really simple way to 'match' your antenna after gathering the feed-Z at the interested frequency is to enter the data into ===> "*Iowa Hills Smith Chart v3.0*" software to establish the matching elements needed. 73 Dick/w7wkr On Wed, Mar 29, 2023 at 9:02 AM wrote: > Send Topband

Topband: Balloon Supported Vertical

Greetings to All ! Thank you to everyone who has responded to my original note. Looks like I will have to do my own search for the balloons as no one included a source for them BUT did include lots of great user info. Again, thanks. As in my past, I will be generating the H2 gas where

Topband: Balloon Supported Vertical

Greetings All I want to try a balloon supported Vertical for 160. Any advice on sources for balloons? Mylar material and diameters up to 2-feet would be my choice. 73. Dick/w7wkr at CN97uj _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: Radio In A Box

Regarding ===> = Message: 5 Date: Mon, 5 Apr 2021 13:15:37 -0600 From: W0MU Mike Fatchett To: topband@contesting.com Subject: Re: Topband: Great Engineering by AA7JV Message-ID: Content-Type: text/plain; charset=utf-8; format=flowed Elon Musks' starband internet could

Re: Topband: Topband Digest, Vol 217, Issue 1

Requesting "Off-Line" replies to a question I am strongly considering purchasing an Elecraft KPA-500 and KAT-500 amplifier and tuner combo. The KPA-1500 is probably too much for the neighbors around me (compact 80X100 foot city lots) to 'enjoy', so the 500-watt system best suits them AND my

Topband: Hard-Line Connectors

Hi Jim and All I presently have four new but unpackaged ===> https://www.google.com/search?q=%22gp+500+du+connector%22=%22gp+500+du+connector%22=chrome..69i57j33.25553j1j8=chrome=UTF-8 core products - Corning www.corning.com › selection-guides › CRR-867-AEN

Topband: Adding connectoirs to CATV Hardline

Hi Jim/K9YC I read your material ===> http://k9yc.com/Coax-Stubs.pdf " Q: How can I attach PL259s to half-inch CATV hard line? BIG SNIP" I use the regular CATV industry connectors with the LONG center conductor protruding from the connector and threads that exactly match those of the PL259

Topband: Solereing to Aluminum

Hello Chuck Are you using a heavy-duty soldering iron and continuously "scrubbing-like-hell" the Aluminum surface under the oil with the 'tip' to break-thru the AL-oxidation layer to allow the solder to whet the Al? I continuously feed the solder into the region to build-up a solderable 'blob'

Topband: Nasty QRM From ??

Greetings All Here are my basic conditions: - KiwiSDR (~DC-to-30MHz) or - Apache-Labs 7000dle - Dell laptop computer - Both on battery power I have cleaned up my system using chokes and filtering to the point there are virtually no CM-signals entering the receiver when the feedline at the

Topband: Measuring Common Mode Chokes (Michael Tope)

Hello All Maybe the proof of the pudding is to apply the CM-Choke at the end of your TX/RX coax and replace the antenna connection with a 50 (75) Ohm load. Then compare any received signals at the receiver with and without the CM choke against what you see with the load applied directly at the

Topband: Arborist Slingshot Use

I've been using a Sherrill "BigShot" slingshot for years to install wire antennas in the tall Fir trees around my place. It will launch a 3/4-inch metal pipe-elbow over 100-plus feet tall trees w/o any problem. Make sure you paint the weight a bright color to make it easier to find. Ten feet of

Topband: RFI On TopBand by 57JNDenneny

Regarding ===> "Message: 1 Date: Mon, 22 Jul 2019 15:59:44 -0700 From: <57jndenn...@comcast.net> To: Subject: Topband: RFI on TB " As a starting point to check-out *everything* between the feed-line connection directly at the *antenna feed-point* and a receiver, connect a 50-ohm termination at

Topband: Can You Copy The Really Weak Signals?

Check-out this work by G3ZIL and others ===> *https://www.researchgate.net/publication/319903566_Improving_HF_Band_SNR_from_analysis_of_WSPR_spots * 73 Dick/w7wkr presently at CN97uj

Topband: Locating Problem Signals

If I remember correctly, there have been requests here for folks to listen to an offending signal so its location can be determined. There is a fairly inexpensive way to accomplish this task using a ~$200 "0-to-30MHz SDR" called "Kiwi". One of its operating modes includes TDoA measurements using

Topband: Inverted L improvement question

Hello Guy (and the group) I just finished reading your reply/observations on 160-Meter verticals - L's, etc - and wonder what your thoughts may be for the so-called "Half-Square" antenna (H-S) where the high current point is at the top of the array and the antenna is high-voltage-fed at the

Topband: Installing Wire Antennas Supported By Lines Over Tall Trees

I use a "Big Shot" arborist slingshot to install my wire antennas from tall Fir and Cottonwood trees. Check it out here ===> *https://www.sherrilltree.com/sherrilltree-big-shot-standard-kit * You can launch a 3/4-inch pipe elbow

Topband: IV3PRK AND ALL Those Links !

I had no idea those LINKS were included in my email posting about copying IV3PRK using FT8 on 160 last night. My apology to all. I ran WSPR thru the night and discovered DP0GVN copied W7WKR and W8AC way down in Antarctic-land. Appears conditions were pretty good on 160 last night. 73 Dick/w7wkr

Topband: Copying IV3PRK in WA-State CN98

Is this for real or is he using a remote? Copying *IV3PRK* ===> Txmtr Band Mode Distance Time (UTC)

Topband: Using old 1/2 inch Comscope hardline for my 4-square

Greetings All Where Terry Burge posted ===> === Message: 1 Date: Mon, 25 Jun 2018 22:07:47 -0700 (PDT) From: terry burge To: topband@contesting.com, terry burge Subject: Topband: Using old 1/2 inch Comscope hardline for my 4-square Hi guys and gals,

Topband: Regarding 1/2 wave inv L topic

Greetings all Check out this material IF you have not already done so ===> *http://www.antennasbyn6lf.com/2017/02/lf-mf-antenna-notes.html * 73 Dick/w7wkr _ Topband Reflector Archives -

Topband: Unfortunately I also feel that Ham radio is more or less lost.- Hans Hjelmstr?m

In Hans Hjelmstrom's opinion I've partially listed below, I completely agree. Ham Radio is doomed to oblivion once we old-timers die off. Why ? Well, consider: 1 - Fear of the FCC and loss of license is gone 2 - Profanity and other on-air forms of civil disrespect abound 3 - 8 and 9-YO EXTRA

Topband: Radio World; Noise Floor; Where do we go from here?

Hi - In reference to ===> Today's Topics: 1. Re: Radio World; Noise Floor; Where do we go from here? (Guy Olinger K2AV) Check out the QST *readers comments* of March 2010 p55. Folks will have to be willing to pay a few $1 more for electronic items to be designed correctly to turn this

Topband: Antenna Impedance Measurements

Many thanks to those who sent recommendations for portable antenna impedance measurement tools. I will purchase the AA-170 and smile all the way to the bank. . . 73 Dick/w7wkr CN97uj _ Topband Reflector Archives - http://www.contesting.com/_topband

Topband: DXCC Issues !

Greetings All Where Tom - W8JI - says I think the real solution is a DXCC endorsement or a new DXCC that requires the holder to swear he did it all transmitting and receiving from one ​ location all by himself with gear he assembled I totally agree ! What good, really, is a QSO with someone you

Topband: CQWW160 Remote receiver rule

Regarding Rick Karlquist's commentary === where he says *. . . . Remote bases are now banned from DXCC as well. This is the familiar pattern of things that were OK for the elite, suddenly being banned once the great unwashed obtain access. . . . .* Back around 1978 I sent in a proposed article

Topband: T32RL Operation

http://www.dxcoffee.com/eng/2015/01/14/t32rl-kiribati-oc-024/?utm_source=feedburnerutm_medium=emailutm_campaign=Feed%3A+dxcoffee%2Feng+%28DxCoffee+-+Hamradio+Magazine%29 73 Dick/w7wkr CN97uj _ Topband Reflector Archives - http://www.contesting.com/_topband

Topband: My apology to everyone !

My note to NI6S concerning his 106-foot tower and 160-meters was NOT suppose to include a repeat of the entire Topband list of the day. I had stripped-out his part and pasted it in a note to topband and somehow everything was included. I guess it pays to send yourself the message to ensure it

Re: Topband: Topband Digest, Vol 144, Issue 34

Ed - NI6S question about using his 106-foot high tower === Message: 1 Date: Wed, 24 Dec 2014 10:29:24 -0800 From: Ed via Topband topband@contesting.com To: topband@contesting.com topband@contesting.com Subject: Topband: 160m Sloping Vertical Antenna?

Topband: RTTY on 160-Meters

Greetings everyone Regarding === Message: 19 Date: Thu, 4 Dec 2014 09:00:09 -0500 From: Jeff w...@charter.net To: Tim Shoppa tsho...@gmail.com, KE1F Lou lmecs...@cfl.rr.com Cc: topBand List topband@contesting.com Subject: Re: Topband: RTTY on 160 meters Message-ID:

Topband: Radials over a stone wall

Good morning to everyone A technique I've seen used to go under a road or surface obstruction is to dig work-pit holes on opposite sides and use a hydraulic-jack laying on its side with its base pressing against a steel-plate or block of wood positioned against the back-side of the access pit.

Topband: Soldering in the wild

Hello All Most of my 'soldering in the wild' has used a small gas-fired torch (a BIC lighter works well) but I have often used nothing more than a strike-anywhere match. Try it - you will be pleasantly surprised ! I wrap the knife-scraped-clean-wires together and then wind a length of solder