diff --git a/src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs b/src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs
index 47fc663..7822ff7 100644
--- a/src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs
+++ b/src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs
@@ -366,11 +366,8 @@ pub struct ChannelDsp {
 
 impl ChannelDsp {
     fn clamp_bandwidth_for_mode(mode: &RigMode, bandwidth_hz: u32) -> u32 {
-        if *mode == RigMode::WFM {
-            bandwidth_hz.min(192_000)
-        } else {
-            bandwidth_hz
-        }
+        let _ = mode;
+        bandwidth_hz
     }
 
     pub fn set_channel_if_hz(&mut self, channel_if_hz: f64) {
@@ -393,7 +390,7 @@ impl ChannelDsp {
         }
 
         let target_rate = if *mode == RigMode::WFM {
-            audio_bandwidth_hz.max(audio_sample_rate.saturating_mul(4)).max(192_000)
+            audio_bandwidth_hz.max(audio_sample_rate.saturating_mul(4))
         } else {
             audio_sample_rate.max(1)
         };
@@ -410,13 +407,7 @@ impl ChannelDsp {
             self.audio_sample_rate,
             self.audio_bandwidth_hz,
         );
-        // For WFM, widen the IQ filter enough to pass the RDS subcarrier at
-        // 57 kHz (requires cutoff ≥ 65 kHz → bandwidth ≥ 130 kHz).
-        let iq_filter_bw = if self.mode == RigMode::WFM {
-            self.audio_bandwidth_hz.max(130_000)
-        } else {
-            self.audio_bandwidth_hz
-        };
+        let iq_filter_bw = self.audio_bandwidth_hz;
         let cutoff_hz = iq_filter_bw.min(channel_sample_rate.saturating_sub(1)) as f32 / 2.0;
         let cutoff_norm = if self.sdr_sample_rate == 0 {
             0.1
@@ -480,11 +471,7 @@ impl ChannelDsp {
             Self::pipeline_rates(mode, sdr_sample_rate, audio_sample_rate, audio_bandwidth_hz);
         // For WFM, widen the IQ filter enough to pass the RDS subcarrier at
         // 57 kHz (requires cutoff ≥ 65 kHz → bandwidth ≥ 130 kHz).
-        let iq_filter_bw = if *mode == RigMode::WFM {
-            audio_bandwidth_hz.max(130_000)
-        } else {
-            audio_bandwidth_hz
-        };
+        let iq_filter_bw = audio_bandwidth_hz;
         let cutoff_hz = iq_filter_bw.min(channel_sample_rate.saturating_sub(1)) as f32 / 2.0;
         let cutoff_norm = if sdr_sample_rate == 0 {
             0.1
@@ -543,7 +530,9 @@ impl ChannelDsp {
 
     pub fn set_mode(&mut self, mode: &RigMode) {
         self.mode = mode.clone();
-        self.audio_bandwidth_hz = default_bandwidth_for_mode(mode);
+        if *mode != RigMode::WFM {
+            self.audio_bandwidth_hz = default_bandwidth_for_mode(mode);
+        }
         self.demodulator = Demodulator::for_mode(mode);
         self.rebuild_filters(true);
     }