I increased the filter bandwidth on both my TR-4C and my S-Line. ?I feel it improved both TX and RX. ?On my IC-7610 TX is always 2.8 kHz and RX most of the time is either 2.8 or 2.4 kHz, and only rarely 2.1 kHz. ?This is subjective and others may disagree.
Rob, NC0B?
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On Mar 24, 2024, at 7:13 AM, Sean (KK6BEB) <seanlynch@...> wrote:
?
I can¡¯t speak to the TR7, but I have 2 TR-4CWs (both use the same mic and Ron recently went through both).?
People comment on it when I¡¯m on the one with the wider INRAD filters. Long time ham said it¡¯s the best sounding Drake he¡¯s heard. People also notice when I¡¯m on the stock filters.?
I¡¯m using a Kenwood MC-60 mic on both.
73
Just as a way to evaluate how much improvement one might gain by using a broader filter, has anyone tried just jumping the SSB filter with a 100 Ohm resistor? (Or, if you have an AM filter, try that.) I tried that once
with a TR7 and I found that the audio was not THAT much improved by widening that IF filter.
I guess HiFi audio was not a priority for Drake (or Collins) radio designers.
The closest radio I have ever used with HiFi SSB was the RME 6900, That receiver really sounded exceptional, as pleasant as my FTDX-10 (by recollection only, since I have not had an RME 6900 in the shack for many years).
Gary
W0DVN
On Sat, Mar 23, 2024 at 02:39 AM, Rick W4XA wrote:
Since they make filters for the R-4C & TR-7 (even custom bandwidth)? if enough people showed interest, they might be willing to make filters for the TR-4 series of radios too!
I'd definitely be a player for filters for my TR4cw/rit to increase bandwidth and improve already great receive audio!!
Peter
VE9KX
Rob Sherwood