Poor performance vhf Moonraker antenna SQBM4060P

The place to talk about specific amateur radio equipment and all types of accessories, fixes, repairs and modification.
Post Reply
mickymcd
Super Member
Super Member
Posts: 306
Joined: 28 Apr 2010, 16:15
Location: Teesside

Poor performance vhf Moonraker antenna SQBM4060P

Post by mickymcd » 16 Feb 2017, 13:24

Hi all I use 2m a lot ive been using a radiozing x50 antenna 17' from the floor coax run is around 25' to the shack I get out great from where it is located and I receive well.I fancied another antenna which would be about 15' higher than the x50 mounted aboved my cobwebb antenna I purchased the moonraker SQBM4060P as it was on offer and its sold as a quad band antenna 6/4/2/70cm now I know it aint going to be great on 6/4 but it could be useable if the band is ever open.Here's the thing the moonraker antenna is giving me dire performance I was listening to a station last night on 2m using the moonraker antenna he was 4/3 when I swapped over to the x50 he was 5/9+.
Im thinking is the cobwebb limiting the performance with it being so close to the new antenna ? the swr on the new moonraker antenna is fine thru the bands its advertised to work on but before I start to take it down for some investigation I just cant belive this antenna would be so poor ? ive emailed moonraker yet to have a reply incase they've had returns etc. {bnghd}

User avatar
Andy
Top Poster
Top Poster
Posts: 1992
Joined: 01 Jun 2004, 09:00
Location: Cheshire
Contact:

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by Andy » 17 Feb 2017, 15:20

Moonraker antennas seem to have a reputation for being 'not the best', but such a massive difference seems a bit strange. I suppose my next move would be to remove the x50 and put the Moonraker in its place to see if it's the siting that's the problem.
In my experience quad-band antennas never work well on all four bands, there are too many compromises.
'SOMEONE GET ME A SAW!'
Andy.

User avatar
Adriano9966
Veteran
Veteran
Posts: 3502
Joined: 07 Jul 2008, 22:13
Location: Banbury Oxfordshire

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by Adriano9966 » 17 Feb 2017, 17:25

If you can get away with it and you have the space you could have seperate antennas for 6 and 4 metres

Here is a design for a home brew dual band colinear, in my view this article has excellent photos diagrams and good explanation throughout

HTH kind regards Adrian http://www.anderschou.dk/oz3qy/ANTENNAS/UHF2.htm

mickymcd
Super Member
Super Member
Posts: 306
Joined: 28 Apr 2010, 16:15
Location: Teesside

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by mickymcd » 13 Apr 2017, 07:35

Hi all thanks for the input I tried moving the moonraker quad band also tried diff coax too no avail in the end after contacting moonraker they have give me a refund on the antenna which im pleased about but the poor performance on this particular anteena is woeful for such a price.

User avatar
owza
Super Member
Super Member
Posts: 326
Joined: 16 May 2011, 10:26
Call Sign: 2E0
Location: NW, UK

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by owza » 13 Apr 2017, 08:01

I've had a similar experience with the Mirfeild ME64270. It does gets me on 4 bands though. With some reasonable contacts, well into Europe on 6, Ireland on 4. It doesn't do a good job on 2m, but it works well enough for me to chat with local stations. It's a compromise, because the alternative is for me not to be operating on 4/6, or vice versa.

steepeljack69
Super Member
Super Member
Posts: 142
Joined: 07 Jan 2015, 16:06
Call Sign: 26SF333
Location: Leeds 18

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by steepeljack69 » 09 Oct 2017, 10:55

I bought the 6/4/2/70 version as I can’t have too many antennas up,it replaced a Diamond x-50.Totally useless!i couldn’t work any of the 2m repeaters which I worked easily with the x-50.Also swr was really high on 4m,I couldn’t work anyone.What did I expect from a antenna just over a meter long.I wouldn’t buy one but sum say they work ok.

User avatar
kilimax
Veteran
Veteran
Posts: 2652
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by kilimax » 09 Oct 2017, 15:38

steepeljack69 wrote:I bought the 6/4/2/70 version as I can’t have too many antennas up,it replaced a Diamond x-50.Totally useless!i couldn’t work any of the 2m repeaters which I worked easily with the x-50.Also swr was really high on 4m,I couldn’t work anyone.What did I expect from a antenna just over a meter long.I wouldn’t buy one but sum say they work ok.
I've had one up for a few months and it's about to be replaced as it's as much use as a chocolate tea pot. As you say, swr is high on 4m and overall performance is extremely poor. You expect compromise on 6 & 4 due to its physical size but you would think 2m & 70cm would be more or less comparable to an X-50.

I have a replacement waiting to go up in its place at the loss of 4m unfortunately. I have a 4m beam anyway but thought this could be a decent multiband utility type antenna but no such luck.

It's a pile of poo
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed radios that many times, I've forgotten what I have :think:

steepeljack69
Super Member
Super Member
Posts: 142
Joined: 07 Jan 2015, 16:06
Call Sign: 26SF333
Location: Leeds 18

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by steepeljack69 » 09 Oct 2017, 16:02

I thought the same but like u say they r crap and people need to keep their money as these are a waste!

steepeljack69
Super Member
Super Member
Posts: 142
Joined: 07 Jan 2015, 16:06
Call Sign: 26SF333
Location: Leeds 18

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by steepeljack69 » 12 Oct 2017, 14:11

Sum guy on 70mhz Facebook group reckons there best thing since sliced bread!says swr is ok on 4m and is ok on other bands.He must have a special one,everyone I know that’s had one doesn’t recognise anything he has said.

User avatar
MrWeetabix
Admin
Admin
Posts: 14051
Joined: 26 Aug 2008, 13:34
Call Sign: 26TM175
Location: Tynemouth

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by MrWeetabix » 12 Oct 2017, 14:54

steepeljack69 wrote:Sum guy on 70mhz Facebook group reckons there best thing since sliced bread!says swr is ok on 4m and is ok on other bands.He must have a special one,everyone I know that’s had one doesn’t recognise anything he has said.
I reckon his SWR meter is busted! :lol:
26TM175. OP: Craig. QTH: Tynemouth. Also 163TM175 when mobile in Wales 8)

PO Box: 62 Town: Albrighton City: Wolverhampton Zip: WV7 3WR

TM1 is now on Facebook http://tinyurl.com/TM1onFB || New Tango Mike QSL cards https://tinyurl.com/TM1-NewQSL

User avatar
kilimax
Veteran
Veteran
Posts: 2652
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by kilimax » 12 Oct 2017, 14:56

MrWeetabix wrote:
steepeljack69 wrote:Sum guy on 70mhz Facebook group reckons there best thing since sliced bread!says swr is ok on 4m and is ok on other bands.He must have a special one,everyone I know that’s had one doesn’t recognise anything he has said.
I reckon his SWR meter is busted! :lol:
Perhaps he has used that swr grease again! :)
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed radios that many times, I've forgotten what I have :think:

User avatar
MrWeetabix
Admin
Admin
Posts: 14051
Joined: 26 Aug 2008, 13:34
Call Sign: 26TM175
Location: Tynemouth

Re: Poor performance vhf Moonraker antenna SQBM4060P

Post by MrWeetabix » 12 Oct 2017, 16:06

Well all I know is that we don;t really have a subjective answer to whether it's any good or not until CH25 has let us know what he thinks........ :lol:
26TM175. OP: Craig. QTH: Tynemouth. Also 163TM175 when mobile in Wales 8)

PO Box: 62 Town: Albrighton City: Wolverhampton Zip: WV7 3WR

TM1 is now on Facebook http://tinyurl.com/TM1onFB || New Tango Mike QSL cards https://tinyurl.com/TM1-NewQSL

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests