I found an old thread on this, but short of dredging up one that is 7 years old, I thought I'd post a new one regarding the merits of this exceptional filter from Par Electronics. This is my eHam review on it.
About five minutes into VHFSYM152HT post-install monitoring, I knew the money I sent Dale was well spent. My filter is placed on the input side of a Stridsberg MCA204M multicoupler sharing a Comet GP-15 antenna that is exclusively used for receive only in the VHF and UHF public safety ranges. Suffice to say this filter is kicking the offending paging system's butt! I was getting killed by a strong paging system on 152.600 which was mixing with a local NOAA weather broadcast at 162.550 and dumping out in the 163-174 MHz range on my Uniden BCD996XT. I enjoy unattended searching, logging, and audio recording using ProScan software in that band for signals and prior to this filter it was nearly impossible to do so. Problem solved! Also, looking at the signal via my Airspy SDR it is clearly significantly attenuated, no more images and aliases from it showing up on screen. Without the filter the signal peaked right at around 0 db, with the filter inline it was knocked down to the area of -40 db as advertised, and any aliases or images from it that appeared all over the FFT were gone.
I'm not sure what delayed me in buying one of these gems, but I am certainly glad I did. As mentioned elsewhere in reviews, communication with Dale is a pleasure; questions are promptly answered in a knowledgeable and friendly manner. I have bought other items from Dale in the past and this customer friendly approach is always consistent.
I'm an extremely pleased end user of the product and I would not hesitate to recommend this filter to anyone having a similar problem. Talk about $$ well spent!
About five minutes into VHFSYM152HT post-install monitoring, I knew the money I sent Dale was well spent. My filter is placed on the input side of a Stridsberg MCA204M multicoupler sharing a Comet GP-15 antenna that is exclusively used for receive only in the VHF and UHF public safety ranges. Suffice to say this filter is kicking the offending paging system's butt! I was getting killed by a strong paging system on 152.600 which was mixing with a local NOAA weather broadcast at 162.550 and dumping out in the 163-174 MHz range on my Uniden BCD996XT. I enjoy unattended searching, logging, and audio recording using ProScan software in that band for signals and prior to this filter it was nearly impossible to do so. Problem solved! Also, looking at the signal via my Airspy SDR it is clearly significantly attenuated, no more images and aliases from it showing up on screen. Without the filter the signal peaked right at around 0 db, with the filter inline it was knocked down to the area of -40 db as advertised, and any aliases or images from it that appeared all over the FFT were gone.
I'm not sure what delayed me in buying one of these gems, but I am certainly glad I did. As mentioned elsewhere in reviews, communication with Dale is a pleasure; questions are promptly answered in a knowledgeable and friendly manner. I have bought other items from Dale in the past and this customer friendly approach is always consistent.
I'm an extremely pleased end user of the product and I would not hesitate to recommend this filter to anyone having a similar problem. Talk about $$ well spent!
