I'm running WSJT-X v2.0 on a Windows 10 Pro (1803 update) computer.

On Saturday, HV0A was running F/H mode on 3567 with a large number of callers. I noticed strange behavior as follows with annotated excerpts from my all.txt file:

181222_224915  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
224930 -12  0.2  303 ~  DS1JFY RR73; CT1APN <HV0A> +06
224930 -14  0.2  363 ~  TA4RC RR73; IK2IQC <HV0A> +12
224930 -15  0.2  423 ~  WB4OSS HV0A RR73
224930 -16 -0.9 2177 ~  HV0A LZ2KV KN33
224945   9  0.2 1041 ~  HV0A N0FW EM79
224945  -8  0.1 1297 ~  HV0A W3JX FM19
224945  -3  0.0 1513 ~  HV0A K0KX EN35
224945  -4  0.1 1608 ~  HV0A N5ZM EM34
224945  -6  0.1 1675 ~  HV0A NS9I EN64
224945  -1  0.1 1786 ~  HV0A N9TF EN52
224945 -16  0.2 1848 ~  HV0A AA4VV EM95
224945 -14  0.2 1979 ~  HV0A AB9V EN60
224945  -9  0.3 2076 ~  HV0A K9ZO EN50
224945  -9  0.1 2147 ~  HV0A KG9Z EN90
224945 -24  0.1 2226 ~  HV0A KC4JNW EM84
224945 -15  0.1 2307 ~  HV0A AI2N FN13
224945 -19  0.1 2483 ~  HV0A WR4K EM73
224945 -17  0.1 2707 ~  HV0A K4HC FM06
224945 -19  0.1 1308 ~  HV0A N4EFS EM94
225000 -15  0.2  303 ~  IK2IQC HV0A +12
225000 -16  0.2  363 ~  W3JX HV0A -09
225000 -17  0.2  423 ~  K0KX HV0A -11
225000 -18  0.2  483 ~  R2AKM HV0A -12
225000 -16 -0.9 2218 ~  HV0A LZ2KV KN33
181222_225015  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225030 -15  0.2  303 ~  R2AKM RR73; IK2IQC <HV0A> +12
225030 -16  0.2  363 ~  W3JX RR73; K0KX <HV0A> -12
225030 -16  0.2  423 ~  K9ZO HV0A -16
225030 -16  0.2  483 ~  NS9I HV0A -19
181222_225045  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
  **next line HV0A responds to MI0KOA for the first time**
225030 -16  0.2  543 ~  MI0KOA HV0A -03
225030 -15 -0.9 2179 ~  HV0A LZ2KV KN33
  **next line responses seem to be coming from MI0KOA rather than HV0A**
225100 -11  0.2  303 ~  IK2IQC RR73; K9ZO <MI0KOA> -16
225100 -11  0.2  363 ~  K0KX RR73; EA1PO <MI0KOA> +12
225100 -11  0.2  423 ~  MI0KOA HV0A RR73
225100 -12  0.2  483 ~  NS9I HV0A RR73
181222_225115  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225130  -5  0.2  303 ~  EA1PO RR73; K9ZO <MI0KOA> -16
181222_225145  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225130  -4  0.2  363 ~  IK2IQC RR73; LA7GIA <MI0KOA> -06
225130 -14 -0.8 2233 ~  HV0A LZ2KV KN33
225200  -6  0.2  303 ~  LA7GIA RR73; EA3JL <MI0KOA> +06
  **this behavior continued until I shut down and re-started WSJT-X**
181222_225545  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
2018-12-22 22:56  3.567 MHz  FT8
225600  -9  0.5  303 ~  TA5FA RR73; G3KZR <HV0A> -04
225600 -10  0.5  363 ~  PA0VLY HV0A -09
225600 -10  0.5  423 ~  DJ4MM HV0A -09
225600 -10  0.5  483 ~  DK5AI HV0A +08
181222_225615  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225630  -8  0.5  303 ~  DJ4MM RR73; DL5DSM <HV0A> +04
181222_225645  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225630  -9  0.5  363 ~  DK5AI HV0A RR73
225630 -10  0.5  423 ~  G3KZR HV0A RR73
225630 -11  0.5  483 ~  PA0VLY HV0A RR73
225630  -9 -0.6 1233 ~  HV0A LZ2KV KN33
225700  -5  0.5  303 ~  DL5DSM RR73; DH7RG <HV0A> -06
225700  -5  0.5  363 ~  TA2LP HV0A -07
181222_225715  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225700  -9 -0.7 1232 ~  HV0A LZ2KV KN33
225730  -5  0.5  303 ~  DH7RG RR73; TA1CM <HV0A> -12
225730  -6  0.5  363 ~  TA2LP HV0A RR73
225730 -10 -0.7  632 ~  HV0A LZ2KV KN33
225745   4  0.5 1041 ~  HV0A N0FW EM79
225745 -17  0.3 1103 ~  HV0A N9KT EM69
225745  -7  0.3 1184 ~  HV0A K9IR EN52
225745  -9  0.5 1380 ~  HV0A AA4VV EM95
225745 -23  0.4 1457 ~  HV0A KE2M FM29
225745 -23  0.3 1543 ~  HV0A N4FN EM74
225745  -7  0.4 1606 ~  HV0A N9TF EN52
225745   4  0.4 1817 ~  HV0A N0AT EN34
225745  -1  0.4 1903 ~  HV0A N5ZM EM34
225745   6  0.5 2085 ~  HV0A N2BJ EN61
225745  -5  0.4 2147 ~  HV0A KG9Z EN90
225745 -10  0.3 2495 ~  MI0KOA WR4K EM73
225745 -11  0.5 2706 ~  HV0A K4HC FM06
225745 -14  0.4 1156 ~  HV0A AB4Z EM95
225745 -15  0.3 1616 ~  HV0A W9MK EN51
225745  -8  0.2 2467 ~  HV0A KB4KBS EM74
225745 -18  0.4 2511 ~  HV0A K2JL FN22
**after re-starting program, behavior is normal for a couple of transmissions, then reverts to the problem**
225800  -5  0.5  303 ~  DH7RG RR73; TA1CM <MI0KOA> -12
225800  -6  0.5  364 ~  F4BKV HV0A +15
225800 -13 -0.6  632 ~  HV0A LZ2KV KN33
181222_225815  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
225830  -4  0.5  303 ~  F4BKV RR73; TA1CM <MI0KOA> -12
225830  -5  0.5  363 ~  N0FW HV0A -09
225830 -10 -0.7  633 ~  HV0A LZ2KV KN33
**restarted the program again, made my QSO, then problem re-appeared again**
2018-12-22 23:11  3.567 MHz  FT8
231130  -9  0.2  303 ~  TA4SO RR73; JA5XAE <HV0A> -18
231130  -9  0.2  363 ~  JH4IFF RR73; JA5MHD <HV0A> -22
231130 -10  0.2  423 ~  JE6KYA HV0A -15
231130  -9  0.2  483 ~  TA1MFR HV0A -11
181222_231145  Transmitting 3.567 MHz  FT8:  HV0A K9MM EN62
231200  -6  0.2  303 ~  JE6KYA RR73; K9MM <HV0A> -12
231200  -7  0.2  363 ~  KG9Z HV0A RR73
231200  -8  0.2  423 ~  TA1MFR HV0A RR73
181222_231215  Transmitting 3.567 MHz  FT8:  HV0A K9MM R-06
231230  -7  0.2  303 ~  JA5XAE RR73; K9MM <HV0A> -12
231230  -7  0.2  363 ~  OM5XX HV0A -14
231230  -8  0.2  423 ~  SV8EUB HV0A +11
231230  -8  0.2  483 ~  UW8SM HV0A +03
181222_231245  Transmitting 3.567 MHz  FT8:  HV0A K9MM R-07
231300  -6  0.2  303 ~  K9MM RR73; SV8EUB <HV0A> +10
231300  -7  0.2  363 ~  OM5XX RR73; W1WC <HV0A> -10
231300  -7  0.2  423 ~  UW8SM RR73; N2BJ <HV0A> -12
231315   0  0.1  363 ~  HV0A W1WC R-08
231315  -3  0.1  532 ~  HV0A W3KB FN10
231315 -17  0.1  605 ~  HV0A KW9U EN61
231315  -5  0.3 1118 ~  HV0A N2BJ EN61
231315  -5  0.3 1213 ~  HV0A AA4VV EM95
231315  -4  0.1 1245 ~  HV0A N4EFS EM94
231315 -12  0.1 1299 ~  HV0A N9KT EM69
231315  -9  0.0 1367 ~  HV0A KB4KBS EM74
231315 -14  0.1 1487 ~  HV0A W9OA EN61
231315 -20  0.1 1543 ~  HV0A N4FN EM74
231315  -1  0.1 1641 ~  HV0A K9IR EN52
231315 -14  0.2 1722 ~  HV0A W9ILY EN51
231315   0  0.1 1776 ~  HV0A WD8JJA EM68
231315   2  0.1 1903 ~  HV0A N5ZM EM34
231315  -5  0.2 2007 ~  HV0A VE3XN R-10
231315 -15  0.1 2057 ~  HV0A WR4K EM73
231315 -19  0.1 2126 ~  HV0A KE4YD EM66
231315  -4  0.1 2249 ~  HV0A W1TC FN42
231315  -9  0.2 2397 ~  HV0A K4HC FM06
231315  -6  0.0 2439 ~  HV0A K9IG EM69
231315 -17  0.1 2733 ~  HV0A WA9DU EM69
231315 -15  0.1 1239 ~  HV0A KB0HL EM48
231315  -6  0.1 1633 ~  MI0KOA KD5M EM60
231315  -8  0.2 1820 ~  HV0A K9ZO RR73
231315  -8  0.2 2000 ~  HV0A AB9V EN60
231315 -21  0.2 2196 ~  HV0A KB0XY EN41
231330  -4  0.2  303 ~  SV8EUB RR73; N2BJ <MI0KOA> -12
231330  -3  0.2  363 ~  W1WC RR73; K4HC <MI0KOA> -12

If desired, I can send the entire 377 line session from my all.txt file.

The fact that re-starting the program temporarily fixed this problem indicates to me that this was not a case of MI0KOA also running F/H mode as Fox on the same frequency. Note that it started right after MI0KOA made his QSO. Strange!

Was anyone else seeing this?

73,

John, K9MM



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