Diamond W product reviews by real people like you. Only at – is a Web site dedicated to ham radio (amateur radio). Find great deals for Diamond W 80m/40m/20m/15m/10m HF Long Wire Dipole Antenna. Shop with confidence on eBay!. Diamond Antenna W Wire Dipole Antennas arrive with the really hard work already done for you! All of the wire lugs and connectors are in place and the.
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The W is way better on the lower bands. The critical info here is the wire lengths in the table above as it gives a starting point for those who want to build their own version and have the ability to wind up and tune some simple diamondd traps. One of the ideas that they did use in this design w800 against diamonnd manufacturers’ designs seem on the web was the use of tuning “tails”. Now in my readings, there are articles that say the trap should be tuned lower than the band and others that say mid-band.
On 14MHz, the KHz 1. Building and tuning was simple enough – although I did make it a bit little shorter for 80m that I would have liked no tuning stub for 80 either!
Diamond W 80m/40m/20m/15m/10m HF Long Wire Dipole Antenna | eBay
Contact the site with comments or questions. I don’t really plan to operate much on these WARC bands 12 metres, 17 metres and 30 metres but that old proverbial Murphy has it that if I don’t prepare for it then sometime real soon, I will need to – and then it will be in a hurry.
So big power was deformed traps diaomnd SWR and resonance points was go far up. Just a tip – don’t cut the tail on the 10 MHz element wire length R diamind wind the piece below the termination insulator back along itself a section at a time and recheck the centre frequency. You do need to reasonably accurately tune the traps and the two ways that I have done it are: During a overhaul and cleaning I measured the traps as follow: I have been looking at one of these shortened dipoles for a long time.
Take care that the insulation on the wire cannot be damaged or the tuned length will vary as it makes contact then open-circuits again with swaying in the wind. This is a parts list for the W I tried an 18 MHz additional dipole, but it ruined the 20m tuning Ideally stainless steel idamond should be used but good nickel plated should last a while anyway. Email Subscription You are not subscribed to this review. It also comes sized for the lower band part and there is the need to cut more then specified in the manual if there is the need to go anything above KHz.
One important aspect is the tuning in the 80m band. After all it appeared that the balun supplied with the antenna, was defect. No, I am not hearing everything as I would with a towered beam. The works with coils as L and ens wires as C bringing the extension in resonance at a certain band.
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Very short of space, the 3. So I score it 5. You use bandstop tuned LCs like the W3DZZ combine with the nice tuning tails lucky the traps haven’t a that high Q so the voltage at resonance is reasonable. You could try to remove the black ‘baked-on shroud’ and count the turns on each one as they will diamomd to be replaced anyway.
One thing I will mention about the traps used in this design: If your transceiver has an automatic ATU either internal or external, then it won’t be too diamojd of an issue anyway – simply the efficiency of the antenna will drop as you operate further away from resonance.
What I discovered is that at around 27 or so feet the default length of most all the ‘stubs’ are too long. My construction notes are only in W800 Andrey, callsign deleted Russia, Belgorod.
What must happen is that the traps for each side be tuned to the same frequency! They were not available in North america until recently. Unfortunately when my traps was undeformed I did not measured the L. On 20 and 80 metres, it is the tail at the end of the dipole legs.
Adjusting is simple, a lot easer than a W3DZZ diaond each tune is not influencing the other bands.
Diamond Antenna W (HF dipole), FREEBYTES
That would have meant another 3 wires out each side and even though they don’t need much separation and can be fabricated such that the higher bands ‘droop’ from the lowest diamnd, they are a bit of a problem to tune.
With interesting I find and read your article http: I have taken a quick copy of the translated page and put it on my web site to make it easier for those of us who do not read the Dutch language.
I make nice QSO’s and I can work the world. Main Menu Home Latest News You can also use a spectrum analyser in place of the diode probe – however it must be fed via a series resistor of 5K to 10K to reduce the loading on the trap.
My first traps were all high in frequency according to my GDO relatively accurate so that meant that I had to allow more coax initially. Instead of drilling just one hole at the “other end” of the PVC former, drill a series of holes close together, forming a slot. With this thinking I have the folowing question: Everyone will have a different method of terminating the trap – wire loops a8010 the ends, screw terminals diamonf mineJust make sure that you allow a long enough PVC former to provide some “slot length”.
The balance in the dipole also limits the nearby interference, a problem that is strong with G5RV and other assymetric antenna’s. Other designs see the wire lengths between the traps shortened to fine-tune, which in itself is a very messy and time consuming process.
Setup the Diamond W when I first assembled it and hung it up 4.
Here’s another hint for success: You may have different PVC, different coax, Just an addendum of interest regarding the Diamond W – a warning if you want to take it that way The ropes supplied are bad and it is diamnd to use sailing ropes 5 mm is ok.