old skool Analog PAL CATV STB

[Starglider]

Hi, I am searching for a Analog CATV STB. I have tried TVGo A31 V3 which picks up CATV display ok. However the encrypted channels drop sound intermittently (due to SSAVI sync). My sony TV picks up the same SSAVI channels whichout sound dropping out. I dont care about the fact that the screen is scrambled as long as the sound syncs ok.

Which PAL analog box can i use to do this? must be able to scan all UHF/VHF frequences 100 - 500 Mhz

thanks for any help..

[Starglider]

has anyone used any of these?
Analog Cable TV Converter Professional Manafacturer - Taizhou Wansheng Electronic Co.,LTD. (http://www.rekindle.com.cn/pro_catvconverter.html)