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.
|Published (Last):||12 February 2006|
|PDF File Size:||5.80 Mb|
|ePub File Size:||8.46 Mb|
|Price:||Free* [*Free Regsitration Required]|
The terminals of the coils should also be water protected. Andrey, callsign deleted Russia, Belgorod.
You do need to reasonably accurately tune the traps and the two ways that I have done it are: Contact the site with comments or diaamond. 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 coax traps.
Diamond W8010 80m/40m/20m/15m/10m HF Long Wire Dipole Antenna
As this was built as an “add-on”, the extra wire elements of the new dipole were simply added “in parallel” to the existing dipoles at the balun. My Subscriptions Subscriptions Help. Note that in the Diamond designs, the trap is not connected at the true end of each dipole element – due to the tuning tail. On 20 and 80 metres, it is the tail at the end of the dipole legs.
This is a parts list for the W I make nice QSO’s and I can work the world. It was a great performer on the higher bands but was lacking seriously on 40m and 80m. Just make sure that you either wind good quality insulation tape over the turns OR use some other fixing method to stop the turns from moving after the fine tuning process is complete.
Self-amalgamating rubber tape would be even better – the stuff you should use on all of your exterior coaxial connection joints instead of plain old insulation tape – as it won’t ever come apart, even when exposed to some pretty horrid weather. What must happen is that the traps for each side be tuned to the same frequency! Calculation for this are found on www. However I made a giant mess of my mast’s ropes and ended up with an infuriating disaster so I tore it all down and bought a comet h and am happier.
New to Ham Radio? Everyone will have a different method of terminating the trap – wire loops through the ends, screw terminals like mineThe bandwiths associated with a short loaded dipole with coil are pretty sharp but usable. 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.
I am sure many of the visitors to the web page will find your information helpful in either repairing or cloning the W They were not available in North america until recently.
Diamond W & WARC Band Mods
One of the ideas that they did use in this design as against other manufacturers’ designs seem on the web was the use of tuning “tails”. I used standard plastic egg insulators for the ends of the 10MHz dipole segment and then just some reasonable quality nylon rope down to the fastening points.
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. Set the generator to maximum RF out and the voltmeter to max sensitivity on a Volts range, tune the generator frequency until you see the voltage rise, locate the peak reducing sig gen output as necessary and the final frequency is the nominal trap resonant frequency.
In my case, I did not use the same termination arrangement as the Diamond original simply because the traps were very lightweight and the wire reasonably short – so little weight involved there too. The Diamond W is a HF Multi-band wire dipole using 6 traps plus two wire sections each side to cover the non-WARC bands from ’80’ to ’10’ metres hence the coding. If nothing else, it is a good technical exercise in antenna experimentation.
The fact that I homebrew it, makes no difference: A8010 an addendum of interest regarding the Diamond W – a warning if you want to take it that way You need to expand the turns i.
If it passes close to a wall the SWR increases too much at least in the lower bands. Can I recommend it? Trap dipole for WARC bands: Diamond W Multiband Dipole Modifications.
Diamond Antenna W (HF dipole), FREEBYTES
I have enjoyed km-plus night-time QSOs on 3. The wire lengths for the elements are as follows – but note that if your traps are significantly different to mine, some length variations will occur on 18 and 10 Diamodn Note that the nylon rope supplied seems to be a marine-grade version and should last for many years.
It sounds like you could have had the insulation on the enamelled wire break down and you now have shorted turns on the faulty traps. I apid more for the masts and for attaching well the masts to the wall. Added 24 Octfrom an incoming email: