UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Beolit 707

Hybrid tellies · 1st Mar 2018, 10:27 am

It depends on the IF bandwidth of the AM receivers. Many radios of this age used brutal nasty brickwall filters that cut the audio response off just above 4Khz and they did sound dreadful.
My three top AM performers, Hacker Hunter RP38A, Bush TR130 and my ITT/KB Tiny super all use diode detectors but have a wider IF bandwidth with the audio response gently rolling off at 6.5Khz. These radios do sound good on all the AM stations available and are as pleasant to listen to as many FM stations.

1st Mar 2018, 10:27 am	#4
Hybrid tellies Nonode Join Date: Jan 2004 Location: 1966-1976 Coverack in Cornwall and Helston Cornwall. 1976-present Bristol/Bath area. Posts: 2,965	Re: Beolit 707 - Disappointed with sound It depends on the IF bandwidth of the AM receivers. Many radios of this age used brutal nasty brickwall filters that cut the audio response off just above 4Khz and they did sound dreadful. My three top AM performers, Hacker Hunter RP38A, Bush TR130 and my ITT/KB Tiny super all use diode detectors but have a wider IF bandwidth with the audio response gently rolling off at 6.5Khz. These radios do sound good on all the AM stations available and are as pleasant to listen to as many FM stations. __________________ Simon BVWS member