DIAMOND W8010 PDF
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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Can I recommend it? Most importantly, adjust BOTH sides of the dipoles similtaneously, whether it be a tail-cut or a wind-back. Having now built coaxial traps for a few bands and incorporated them into physical antennas I have noted that the exact frequency of the trap does not seem to be unduly critical. I bought the Diamond W as my first HF antenna, intending to mount it in my attic.
You cannot measure the inductance of the traps because the capacitance built into the construction will cause measurement errors – you can only measure the trap resonance frequency and you know what they will set up for be anyway.
It is manufactured to a very high standard. Mouse-over images for a larger view This is the basic layout of the W, 3 traps on either side of a balun supplied.
So I score it 5. The interaction between the elements because of the close coupling means that adjustment of one dipole in the ray causes de-tuning in another – so around the loop you go – yet again! Was already resonant on 15 80 meters has about 50 kc of spread which isn’t bad as this antenna is quite short.
Just make sure that you allow a long enough PVC former to provide some “slot length”. Only the ends are a little sensitive the height and moisture. New to Ham Radio?
The second idea came to me while I was tuning the traps. If you build one of these add-ons, let me know how you got on If your transceiver has an automatic ATU either internal or external, then it won’t be too much of an issue anyway – simply the efficiency of the antenna will drop as you operate further away from resonance. My construction notes are only in Dutch I had to completely remove the tuning stubs to get the resonants point where i want.
Diamond W HF dipole for 80m/40m/20m/15m10m – Nevada Radio
Diamond Antenna W (HF dipole), FREEBYTES
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. Together with a friend of my, PA2Gwe build this antenna and published the experiment in our league magazine, a summary of this you can find on http: I tried an 18 MHz additional dipole, but it ruined the 20m tuning What must happen is that the traps for each side be tuned to the same frequency!
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.
The ropes supplied are bad and it is better to use sailing ropes 5 mm is ok. Just a tip – don’t cut the tail on the 10 MHz element wire length R – wind the piece below the termination insulator back along itself a section at a time and recheck the centre frequency.
Original english language Diamond data sheet for the W On 14MHz, the KHz 1. The W is way better on the lower bands. When I started 3. 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 band, they are a bit of a problem to tune.
Note that the nylon rope supplied seems to be a marine-grade version and should last for many years. Hope to score some DX with this antenna!
Could I add another wire leg or legs to each side to add these bands?
Bought this aerial secondhand but unopened. Good luck and a lot of fun, perhaps see on the band once.
Calculation for this are found on www.