Topband: Horizontal Waller Flag

Hi all - I need some help please - I have over the summer been building a rotatable HORIZONTAL Waller Flag  (HWF)for 160/80. The dimensions are 26ft boom and the two loops are 16ft*7ft - I am intending to increase the boom to 45 ft with 20ft*10ft as the output on 160 is low - 80m is OK. I have b

Topband: 160 Receiving antennas

160 receiving antennas - very interested to read all the comments - if anyone is interested I have a Top Beam WF-300 40 foot boom - just the beam up for grabs dave g3rcq _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: G3OQT

Richard  G3OQT welcome back  - I heard you last week and thought it was a Pirate - where did that 40 years go ?? Dave g3rcq _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: Top Beam WF-300

Hi all - I have a WF-300 for sale - d...@g3rcq.com  _ Topband Reflector Archives - http://www.contesting.com/_topband

Topband: Top Beam WF-300

For Sale Top Beam WF-300 Waller Flag email d...@g3rcq.com  _ Topband Reflector Archives - http://www.contesting.com/_topband

Topband: Top Beam WF-300

 I have a WF-300 that is surplus to my station Dave g3rcq _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Topband Digest, Vol 182, Issue 20

Sorry to ask but am I allowed to say that I have a Top Beam WF-300 for sale? If not I will not post Dave g3rcq Sent from Mail for Windows 10 From: topband-requ...@contesting.com Sent: 24 February 2018 17:01 To: topband@contesting.com Subject: Topband Digest, Vol 182, Issue 20 Send Topband maili

Topband: Short Verticals

Hi all -  Assuming a standard 1/4 wave vertical is 36 ohms - is there any formula that will calculate the Z if the vertical is short and brought to resonance by top loading wires - I understand the Z will be less - but how much by ? I am trying to use the formula on ON4UN disc to calculate the a

Re: Topband: Topband Digest, Vol 168, Issue 20

Hi all - has anyone compared the SAL-30 to the Yankee Clipper 9 circle array  Dave g3rcq From: "topband-requ...@contesting.com" To: topband@contesting.com Sent: Wednesday, 14 December 2016, 17:00 Subject: Topband Digest, Vol 168, Issue 20 Send Topband mailing list submissions to   

Topband: Waller Loop

This message is aimed at UK dxers - I commissioned Antenna Engineering to build me a Waller Loop - I have used it and its works fine - unfortunately I did not use a rotator man enough and it stuck in one position. I have taken it down and dismantled it - It would need collecting from my QTH and

Topband: (no subject)

Pixel BevPro-1 - I understand that this is no longer in production? has anyone used one or wants to sell one, If anyone can tell me the construction of the termination/reflection transformer together with the variable termination unit that goes in the shack then I can build one. thanks Dave g3rc

Topband: Waller Loop Antenna

Many thanks to everyone who helped in my efforts to get my Waller Loop working correctly. Carlos very kindly sent me an email showing me the effect his tower has on altering the polar plot, his recommendation was detune the tower - this cured his  problem - there is a free Polar plotting program

Topband: Waller Loop

I have built a Waller Loop to the dimension from information on the internet, the loop is vertical and mounted on a tower at 30 foot. My problem is I cannot get any front to back. I have rewound the transformers and made two phasing lines - all show now difference, I checked the 180 degree phase

Topband: Waller Loop

Thanks to everyone that replied - much appreciated. JC - N4IS has confirmed that the braiding should be left floating. Dave g3rcq _ Topband Reflector Archives - http://www.contesting.com/_topband

Topband: Twinax

I am in the process of building a Waller Flag -  I am going to use Twinax - the Twinax I have purchased has a braiding screen similar to coax. What do I connect if anything the coax type screening to?  Do I leave it floating or connect it to one of the inner two wires. Sorry if its a sill question

Topband: Eznec/ 4sq

For many years I have run 4sq on both 80m and 40m - I currently run an 8 element vertical array for 80m and the centre mast is a top loaded vertical 85 foot vertical. When resonating my 4sq verticals I have always disconnected three and resonated one vertical at a time to the target frequenc

Topband: 2 Direction reversable beverage using coax cable

I have finished the installation of 2 two directional beverage following the design in ON4UN 5th edition chapter 7-89 Fig 7-118  -  I cannot get the reflection transformer T3 to give the same gain as the other end of the beverage at T1 - I have put the aim 4170 on the feed point of T1 and obtain

Topband: Voltage along coax feeder

Could anyone please point me in the direction of a circuit to feed +12 -12 and  AC along the feeder to my beverages to switch 3 relays - thanks all from Dave in the UK All good topband ops know fine whiskey is a daylight beverage. _ Topband Reflector

Topband: RDF

How do I calculate RDF – I am currently modelling the Shared Apex Loop antenna recently described in QEX and QST , Not to be confused with the following months article on phased K9AY’s - I have an 8 direction antenna up and running and now wish to add 8 more elements to the array. I will then ha

Topband: DXE 8 Verticals

 I have used both the Hi-Z and the DXE 8 circle - maybe I am missing something but gain is one thing and signal to noise is another! Does changing the links in the DXE amp improve the signal to noise? if its just gain then that can be achieve many other ways. __