demod: replaced AGC with AGC2

AGC2 provides fast attack and slow decay.

grc/hamnet70_demod_sc16qam.grc

@@ -396,26 +396,27 @@ blocks:
     coordinate: [319, 11]
     rotation: 0
     state: enabled
-- name: analog_agc_xx_0
-  id: analog_agc_xx
+- name: analog_agc2_xx_0
+  id: analog_agc2_xx
   parameters:
     affinity: ''
     alias: ''
+    attack_rate: 1e-1
     comment: ''
+    decay_rate: 1e-4
     gain: '1.0'
     max_gain: '65536'
     maxoutbuf: '0'
     minoutbuf: '0'
-    rate: 1e-4
-    reference: '1.0'
+    reference: '1.12'
     type: complex
   states:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1525, 387]
+    coordinate: [1552, 380.0]
     rotation: 0
-    state: enabled
+    state: true
 - name: analog_sig_source_x_0
   id: analog_sig_source_x
   parameters:
@@ -994,11 +995,11 @@ blocks:
     alias: ''
     comment: ''
     d: '0.0'
-    i: '0.03'
+    i: '0.05'
     interval: '1500'
     maxoutbuf: '0'
     minoutbuf: '0'
-    p: '0.001'
+    p: '0.01'
     post_gain: -sym_rate
   states:
     bus_sink: false
@@ -1211,7 +1212,7 @@ blocks:
     state: enabled
 
 connections:
-- [analog_agc_xx_0, '0', hamnet70_insert_delayed_tag_0, '0']
+- [analog_agc2_xx_0, '0', hamnet70_insert_delayed_tag_0, '0']
 - [analog_sig_source_x_0, '0', blocks_multiply_xx_0, '0']
 - [blocks_add_const_vxx_0, '0', blocks_tagged_stream_to_pdu_1_0_0_0, '0']
 - [blocks_add_const_vxx_0, '0', fec_extended_tagged_decoder_0, '0']
@@ -1245,7 +1246,7 @@ connections:
 - [fec_async_decoder_0, out, digital_crc32_async_bb_0, in]
 - [fec_extended_tagged_decoder_0, '0', blocks_repack_bits_bb_0_0, '0']
 - [hamnet70_async_scrambler_0, pdu_out, pad_sink_2, in]
-- [hamnet70_correct_frequency_from_pilot_syms_0, '0', analog_agc_xx_0, '0']
+- [hamnet70_correct_frequency_from_pilot_syms_0, '0', analog_agc2_xx_0, '0']
 - [hamnet70_correct_phase_from_tag_0, '0', hamnet70_correct_frequency_from_pilot_syms_0,
   '0']
 - [hamnet70_freq_est_lr_0, '0', hamnet70_pid_controller_0, '0']