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pretty much made up my mind about buying a Sirio GainMaster 5/8 Wave 0.64w Base Station Antenna.
I have a Sigma Venom halfwave at the moment. This is mounted on a 35 foot Aluminium Flag Pole 2" dieameter. It's a pretty good Antenna with an almost perfect SWR across 40 channels (took a lot of time and effort). I find it does still bring in a lot of QRM/NOISE. I have used this for about 6 months and it's obviously a cheap Antenna,but it has done well.
Been reading a lot of GOOD reviews about the 5/8 GainMaster, but I wanted to seek out peoples opinions who have used...and STILL use these Antennas.
Be very grateful of some opinions of just how good....or...bad this Antenna is.
Sydthecat CT Directors
Call Sign : 2E0VRX Posts : 700 Times Thanked : 41 Join date : 2019-06-26 QTH or Location : Yorkshire dales Equipment Used : Yaesu FTdx 101d, MD200 mic ,Mosley 3ele Yagi Age : 57
The SGM is a excellent performer and has low swr from 26_30 mhz, you will still get qrm and noise with any antenna,I have had mine up a good while and bends happily in the winds, the trick to mounting SGM is on a long pole so it can flex and not take all the strain, if mounted on a short stubby pole it will break.
NUBSTER, glenn dog and redsprite like this post
redsprite New Member
Call Sign : 26-CT-3697 Posts : 43 Times Thanked : 0 Join date : 2020-06-27 QTH or Location : Hemel Hempstead Hertfordshire Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave. Age : 69
Yeah this is on a 5 section interlocking 2" Aluminium, 25ft pole clamped into two very heavy gauge 6" x 9" stand-off brackets that are bolted to a wall and 10ft off the ground. VERY strong and flexible. I stood watching my Sigma swaying around in the recent gale force winds we had here,and the Aluminion pole took most of the pressure. In the strongest gusts the pole moved 8"-10" but there was absolutely no problem, so the GainMaster will be fine,it only weighs 6 kilos 6.6lb so it will be like strapping a feather to a Telegraph Pole.
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glenn dog Major contributor
Call Sign : 56-CT-004 Posts : 355 Times Thanked : 11 Join date : 2019-08-23 QTH or Location : Oulu -Finland Equipment Used : ft-450d-mc kinley - cobra 19dxeu- lincoln+2 - superstar lord - grant 2 - tti hand held- alan42- crt mike cb - zodiac 68 hunting radio hand held- and few PMR 2
Subject: Re: Sirio GainMaster 5/8 0.64w Base Antenna Sat Sep 05, 2020 4:25 am
Had my GM up for 18mths now, working very well, and can take the winter temps i get here in Finland, even bends ok with ice on it, had good local and dx on it this summer.
NUBSTER, redsprite and 26ct954 like this post
Subject: Re: Sirio GainMaster 5/8 0.64w Base Antenna