It is currently Thu May 23, 2019 8:41 am

Click the link below to visit the site sponsor

The Ham Radio Shop




Post new topic Reply to topic  [ 11 posts ] 
 Maas X-300-N v Diamond V2000 
Contributor 2018

Joined: Mon Feb 08, 2016 11:30 pm
Posts: 59
Location: Sheffield
Feedback: 4 (100%)
Reply with quote
Post Maas X-300-N v Diamond V2000
I was reasonably happy with the performance of my Diamond X30 but decided to upgrade to the Maas X-300-N as the Diamond X-300 was out of stock. Since then I have been disappointed and did not see much if any improvement.

I have been told on a number of occasions that buying a copied antenna was the issue.

Has anyone else had this issue with non Diamond antennas?

I local ham is using the V2000 and he is getting into repeaters I can hardy hear and he is only 80 feet away both our antennas are on the roof above the apex.

I will be putting the V2000 up possibly today so fingers crossed this solves the problem.

I have spun the Maars 90 degrees and I do get some repeaters slightly better but still not a patch on the X30.


Mon Aug 15, 2016 5:10 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Advanced Member

Joined: Fri Nov 22, 2013 3:04 pm
Posts: 401
Location: Preston Lancs
Feedback: 11 (87%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
i have a diamond X510 and can't believe how good it is, go original all the time dont buy a copy anything false economy.


Mon Aug 15, 2016 6:50 pm
Profile Send private message WWW

 Maas X-300-N v Diamond V2000 
Online
Advanced Member

Joined: Wed Nov 28, 2012 2:43 pm
Posts: 5227
Location: Cumbria IO94iv
Feedback: 25 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I have an original Diamond V2000, X510 as well as a copy version of the X510.
Comparing the original with the copy is just cosmetics & quality of build, they perform exactly the same. After all for instance a dipole is a dipole no matter who makes it and they can only conform to the laws of physics.

Overall the build is better on the original and it will probably offer the owner a better longevity throughout its life span, the ultimate advantage of the X510 is the almost pancake radiation pattern and that all the power is focused forward almost as good as a beam but in a 360 degrees pattern.

_________________
John G Ritson CMH


Mon Aug 15, 2016 7:28 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Advanced Member
User avatar

Joined: Thu Mar 19, 2015 10:40 pm
Posts: 1178
Location: Warwick
Feedback: 11 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
M6KTP wrote:

I have spun the Maars 90 degrees and I do get some repeaters slightly better but still not a patch on the X30.


Are these 70cms or 2m?

_________________
Alastair - M0KFO


Tue Aug 16, 2016 11:40 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Contributor 2018
User avatar

Joined: Wed Oct 30, 2013 2:47 pm
Posts: 1491
Location: Llanwrtyd Wells
Feedback: 17 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I have the Diamond X300 and was initially disappointed. It was not until I got it up high (50ft) did it shine, especially on UHF.
I've experimented, at 40ft its not better than the old sirio 270 (bit like a x30), at 30ft or lower its completely useless, no better than a coat-hanger.

Also, because of the height (and hence cable run length) I had to change the RG58 (yes I know, I know..) for RG213 to get the performance.

_________________
The Devil take your stereo and record collection.


Wed Aug 17, 2016 1:20 am
Profile Send private message WWW

 Maas X-300-N v Diamond V2000 
Intermediate Member

Joined: Mon Apr 27, 2015 8:36 pm
Posts: 59
Location: Northampton IO92ng
Feedback: 7 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I have a Diamond V2000 (genuine) on a 6' pole on my chimney so about 35' high. It replaced an aged X30, again genuine, and the difference is like chalk and cheese. I can hit repeaters that I couldn't even hear before let alone have a QSO on.


Wed Aug 17, 2016 10:38 am
Profile Send private message

 Maas X-300-N v Diamond V2000 
Contributor 2018

Joined: Mon Feb 08, 2016 11:30 pm
Posts: 59
Location: Sheffield
Feedback: 4 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
V2000 now up above the roof and now hitting repeaters with 2 to 3 points better. Not had chance to try 6m as yet as the band has been poor. Be interested to hear what the V2000 is like on 6m.


Thu Aug 18, 2016 10:51 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Contributor 2018
User avatar

Joined: Wed Sep 09, 2009 7:34 pm
Posts: 272
Location: South Shields & Durham IO94
Feedback: 19 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I have two identical setups, one at home in South Tyneside, the other at my girlfriend's in Durham. Radios are the same so no need to go into that one.

At both shacks I have two colinears. I have an original Diamond V2000 and a brand new Moonraker SQBM1000N so one of each at each shack. All are fed with RG213 and all use GREENPAR N type connectors or GREENPAR PL259's (the best). Feeder lengths are 10m and 15m at both locations, both bungalows so it's easy to maintain stuff.

At both shacks the colinears behave pretty much the same on 6m & 2m. 70cm though is a completely different story.

At BOTH locations, on 70cm, the Diamond colinears show local repeaters GB3TS and GB3NT at greater than S9+30dB. Both Moonrakers show S5 to S7.

At BOTH locations friends report my signals as being 5&9 on the repeater inputs when using the Diamonds but only S2-3 when I connect the Moonrakers.

I've exchanged radios, feeders and aerial positions and the poor signals always follow the Moonrakers.

Another local says he has to "rotate" his Moonraker to get into GB3TS, even though the repeater is LINE OF SIGHT. A directional colinear!?! Never heard of such an animal!. I can accept some minor lobing but NOT to any appreciable degree in a well designed, supposedly "omni-directional" aerial!

My interpretation (as a retired communications tech): The Moonraker is vastly inferior in performance to the Diamond. Its quoted "gain" is vastly exaggerated. I can only assume that the internal loading for lower bands is having either a screening (Faraday) effect on 70cm, or is squirting the radiation pattern in some God foresaken direction.

Having bought 2 x Moonraker halos which couldn't be mounted in the horizontal plane (a halo is intended as an omnidirectional horizontally polarised aerial) and 2 x Moonraker, 4 band colinears (10, 4, 2, 70) that were resonant nowhere near 10 and 4m (33MHz and 72.5MHz), now this fiasco, I'll be avoiding Moonraker like the plague in future.

It's NOT bad feeders. It's NOT local reflections. It's NOT oprator error. These Moonraker aerials, whilst fine on 2 metres, do NOT perform as advertised on 70cm.

_________________
RNI - Radio Northsea International,
The Voice of Europe,
The Sound of the World!


Sat Aug 27, 2016 12:23 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Contributor 2018
User avatar

Joined: Sat Jan 19, 2013 12:30 pm
Posts: 899
Location: Manchester
Feedback: 14 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I have done the copy vs genuine thing several times since the 70's.
Never gone into the physics of why, but for me, the genuine Diamond has always out performed its copies and mimickers.
Decent coax an essential, minimum RG 213 or Ecoflex type.

_________________
G4WLI (G8IKW) Peter
Education officer, West Manchester radio Club http://www.wmrc.co.uk/


Sat Aug 27, 2016 12:42 pm
Profile Send private message WWW

 Maas X-300-N v Diamond V2000 
Contributor 2018
User avatar

Joined: Wed Sep 09, 2009 7:34 pm
Posts: 272
Location: South Shields & Durham IO94
Feedback: 19 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
I called the coax RG213 but two of the runs (one at each house) are PSF1/4M which is broadcast quality equivalent. In fact, the construction of it would make many a lower quality coax whince!

One thing's for certain, it'll be Diamond for me in future. Even my old Maldol, 20 odd years old outperforms the new ones I bought.

_________________
RNI - Radio Northsea International,
The Voice of Europe,
The Sound of the World!


Sat Aug 27, 2016 4:19 pm
Profile Send private message

 Maas X-300-N v Diamond V2000 
Contributor 2018
User avatar

Joined: Wed Sep 09, 2009 7:34 pm
Posts: 272
Location: South Shields & Durham IO94
Feedback: 19 (100%)
Reply with quote
Post Re: Maas X-300-N v Diamond V2000
Just to let people see what's going on inside these aerials: I compared the innards of older and excellent SQBM1000P against the newer SQBM1000N. Notice the immense difference in the phasing/matching networks. The older aerial not only has far more involved matching, the same is brought above the metal of the boss at the randome base whereas the newer version has the phasing network sat inside the metal boss.

Try putting a balun or an unun inside a metal case and see how it performs.

The newer aerial (SQBM1000N) also demonstrates a far weaker field strength than the older 1000P.

Remember, it's 70cm I'm talking about. The older "P" performs admirably there but the "N" realises far weaker, in the region of -40dB, signals, both TX and RX even using the same feeder and mounted in place of the "P".


Attachments:
P v N 01 - Copy.jpg
P v N 01 - Copy.jpg [ 77.96 KiB | Viewed 1953 times ]

_________________
RNI - Radio Northsea International,
The Voice of Europe,
The Sound of the World!
Wed Aug 31, 2016 2:43 pm
Profile Send private message
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore.