diff --git a/app_subghz.c b/app_subghz.c
index d020088d1e5..fbece2f3fe0 100644
--- a/app_subghz.c
+++ b/app_subghz.c
@@ -180,6 +180,7 @@ void protoview_timer_isr(void *ctx) {
     if (app->txrx->last_g0_value != level) {
         uint32_t now = DWT->CYCCNT;
         uint32_t dur = now - app->txrx->last_g0_change_time;
+        dur /= furi_hal_cortex_instructions_per_microsecond();
         if (dur > 15000) dur = 15000;
         raw_samples_add(RawSamples, app->txrx->last_g0_value, dur);
         app->txrx->last_g0_value = level;
@@ -194,7 +195,7 @@ void raw_sampling_worker_start(ProtoViewApp *app) {
     LL_TIM_InitTypeDef tim_init = {
         .Prescaler = 63,
         .CounterMode = LL_TIM_COUNTERMODE_UP,
-        .Autoreload = 10,
+        .Autoreload = 5, /* Sample every 5 us */
     };
 
     LL_TIM_Init(TIM2, &tim_init);
diff --git a/signal.c b/signal.c
index 2ff632811b0..194b34a2fe1 100644
--- a/signal.c
+++ b/signal.c
@@ -53,6 +53,7 @@ uint32_t search_coherent_signal(RawSamplesBuffer *s, uint32_t idx) {
         bool level;
         uint32_t dur;
         raw_samples_get(s, j, &level, &dur);
+
         if (dur < minlen || dur > maxlen) break; /* return. */
 
         /* Let's see if it matches a class we already have or if we