FT8 サンプル音声ファイル ― 2021年06月17日 15時21分57秒
6月15日に関東エリア内で受信された 50MHz のファイルです。
ファイルをご提供いただいた方は1ピリオドで106デコードだったそうです。あとで保存したこのファイルでトライしても87でコードだったそうです。リアルタイムの時はなにか好条件だったんでしょうね。
任意のフォルダーに解凍して、WSJT-X/JTDX/MSHVで読ませて、何局デコードできるか実験してみてください。各ソフトウェアで色々調整もあるのでベストな設定で。私はこのファイルでは92でした。
JTDXをお使いの方は、このファイルを使ってご自身に最適な設定を探すこともできると思います。デコード周期とデコーダー感度の組み合わせで実験をしてみてください
私の実験結果です。
WSJT-X/MSHVで比較実験すると。
何も申し上げることはありません
以下はファイルの提供をしていただいた方がリアルタイムでデコードした106局です。
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20210615_071015 -9 0.2 2043 ~ 5B4AIF JH2AMN -14 ^
20210615_071015 -3 0.1 1755 ~ 5B4ALJ JO1PSX -04
20210615_071015 -13 0.2 2166 ~ 5B4ALJ JA1WWO -03 ^
20210615_071015 -11 -0.0 1659 ~ 5B4ALJ JA1QOP -02
20210615_071015 -3 0.1 2557 ~ SV9CVY JE1POK -19 ^
20210615_071015 -8 0.2 2344 ~ 4Z1UF BG2AUE PN35 ^
20210615_071015 -4 0.3 1097 ~ UB7K 7K2PZG PM96 ^
20210615_071015 -3 0.8 363 ~ 5B4ALJ JH1ECG -10
20210615_071015 -6 0.2 1540 ~ JT1BV DS3DNT PM36
20210615_071015 -12 0.3 1025 ~ 4X1TI JH1HEJ +02 ^
20210615_071015 -15 0.6 2131 ~ 5B4ALJ JF2WGN +04 ^
20210615_071015 -3 0.0 1387 ~ 5B4AIF JA1PBV -11 ^
20210615_071015 -12 0.6 2397 ~ 5B4AIF JH1PXH 73 ^
20210615_071015 -2 0.3 146 ~ 5B4AIF JA1QUT -13
20210615_071015 -6 0.1 2822 ~ UB7K JA1NQU -16
20210615_071015 -6 0.1 1465 ~ 5B4ALJ JA3KVT -13 ^
20210615_071015 -15 0.2 2488 ~ 4X1TI JA9IPF -16 ^
20210615_071015 -11 0.2 1134 ~ 5B4ALJ JL1SAM -03 ^
20210615_071015 -6 0.1 1867 ~ 5B4ALJ JM1SZY -05 ^
20210615_071015 -10 0.1 2245 ~ 4X1TI 7L4XDT -11 ^
20210615_071015 -8 0.1 1630 ~ 4Z1UF JA1PPW +03
20210615_071015 -15 0.1 2431 ~ UR0MC JA1GPN 73 ^
20210615_071015 -6 0.2 2667 ~ 5B4ALJ JR1AIB -14
20210615_071015 -13 0.2 972 ~ BH1PFJ JM1IGJ -13
20210615_071015 -9 0.2 1164 ~ 4X1TI JN1GTG -16 ^
20210615_071015 -9 0.2 1267 ~ 5B4ALJ JH1QAX -10 ^
20210615_071015 -7 0.2 1947 ~ 4X1TI JA1OVD -15
20210615_071015 -2 0.2 195 ~ 5B4ALJ JR1UFN +06 ^
20210615_071015 -3 0.1 3050 ~ 5B4ALJ JA0UUA -10 ^
20210615_071015 -10 0.1 1059 ~ 5B4AIF JH1XUM -07
20210615_071015 -5 0.1 2717 ~ 5B4ALJ JK1EXO -11 ^
20210615_071015 -9 0.1 1330 ~ 4X1TI JA1GTN -08 ^
20210615_071015 -13 0.1 1809 ~ 5B4ALJ JA1ADT -05 ^
20210615_071015 -5 0.2 743 ~ 5B4ALJ JI1EIX -04 ^
20210615_071015 -9 0.1 2194 ~ 5B4ALJ JH1USR +00 ^
20210615_071015 -13 0.1 1431 ~ 4X1TI JA2VXZ -16 ^
20210615_071015 -6 0.2 846 ~ 5B4ALJ JE1AEX -09 ^
20210615_071015 -11 0.0 982 ~ UB7K JG1MUY -09 ^
20210615_071015 -13 0.0 609 ~ 5B4ALJ JA1MLV PM95 ^
20210615_071015 -14 0.5 1274 ~ 4Z1UF JA1ITJ -11 ^
20210615_071015 -12 0.1 2496 ~ 4X1TI JF2KOZ -12
20210615_071015 -13 0.9 992 ~ 5B4AIF JA9CHI -16 ^
20210615_071015 -4 0.2 2634 ~ 4Z1UF JA1PAD -18
20210615_071015 -12 -0.2 927 ~ 4X1TI JA7EVP -06
20210615_071015 -8 0.1 2795 ~ 4Z1UF JH3IVO -06 ^
20210615_071015 -7 0.1 2221 ~ CQ DX JA1BOP PM95
20210615_071015 -13 0.1 468 ~ 4Z1UF JA0IXW -07 ^
20210615_071015 -12 -0.0 799 ~ 5B4ALJ JA3LZS -13 ^
20210615_071015 -12 -0.0 2884 ~ 4Z1UF JH1SJN -08 ^
20210615_071015 -10 0.1 704 ~ 5B4ALJ JL1OZI -03 ^
20210615_071015 -16 0.1 1316 ~ 5B4ALJ JA1SCE -02 ^
20210615_071015 -11 0.2 2941 ~ R6KA JR1IJV -17
20210615_071015 -10 0.1 1441 ~ 5B4AIF JH6OJD/P -06
20210615_071015 -12 0.1 2509 ~ 5B4ALJ JQ1IBI RR73 ^
20210615_071015 -14 0.2 2581 ~ 4X1TI JA1UAV -16 ^
20210615_071015 -10 -0.2 477 ~ 5B4AIF JA1TGO -11
20210615_071015 -9 0.1 1873 ~ 5B4ALJ JA9NLE -14 ^
20210615_071015 -13 0.1 566 ~ 5B4AIF JA9APS -16
20210615_071015 -12 0.1 2351 ~ 4X1TI JE1CCD -10 ^
20210615_071015 -18 0.1 510 ~ 4Z1UF JL1IEO -05 ^
20210615_071015 -14 0.1 2454 ~ 4Z1UF JH1MFN -10 ^
20210615_071015 -13 0.0 2399 ~ 4X1TI JA9FFS -16 ^
20210615_071015 -11 0.1 1018 ~ 5B4ALJ JP7EIP -01 ^
20210615_071015 -12 0.3 268 ~ UB7K JQ1COB PM95 ^
20210615_071015 -12 0.1 942 ~ 4X1TI JH2GZY PM94 ^
20210615_071015 -9 0.1 2604 ~ 5B4ALJ 7K4DHB -11 ^
20210615_071015 -11 0.1 865 ~ 4X1TI JA2IVK -15 ^
20210615_071015 -9 0.1 231 ~ 5B4ALJ JA1WSK -16 ^
20210615_071015 -12 0.3 1173 ~ 5B4ALJ JR2HRR -04 ^
20210615_071015 -11 0.1 678 ~ 4X1TI JA1AFR -12
20210615_071015 -13 0.0 1179 ~ 4X1TI JA4CQS -15
20210615_071015 -11 0.1 2885 ~ 4Z1UF JR4VEV -19
20210615_071015 -10 0.2 1826 ~ 5B4ALJ JK1SQI -02
20210615_071015 -15 0.0 904 ~ 4Z1UF JE2FJI PM84
20210615_071015 -9 0.1 253 ~ 4X1TI JA7CSS -20
20210615_071015 -14 0.3 2144 ~ CQ JA9KRO PM86 *
20210615_071015 -16 0.3 310 ~ 5B4ALJ JF0JYR -04 ^
20210615_071015 -16 0.0 1716 ~ 5B4ALJ JI1CUL PM95
20210615_071015 -16 0.2 1338 ~ 5B4AIF JA2XCR -13
20210615_071015 -15 0.1 1284 ~ 4X1TI JA4NUE -14
20210615_071015 -15 -0.6 1655 ~ 4X1TI JE1BBX -09
20210615_071015 -18 0.3 379 ~ 4X1TI JA3JTG -13 ^
20210615_071015 -14 0.0 1709 ~ 5B4ALJ JA1DKT -14
20210615_071015 -15 0.1 1637 ~ 5B4ALJ JK1TCV -09 ^
20210615_071015 -16 0.2 1506 ~ 5B4ALJ JA2HOL PM95 ^
20210615_071015 -14 0.1 796 ~ 5B4ALJ JH4CPC -12 ^
20210615_071015 -12 0.1 809 ~ 5B4ALJ JA9IPH -08 ^
20210615_071015 -14 0.2 2744 ~ 4Z1UF JR1CAD PM95
20210615_071015 -22 0.3 338 ~ 5B4ALJ JA7CVL -15 ^
20210615_071015 -15 0.1 530 ~ 5B4AIF JE1NHF -11
20210615_071015 -15 0.0 639 ~ 5B4AIF JH1LPF -08
20210615_071015 -12 0.0 405 ~ 5B4ALJ JE1FQV -09 ^
20210615_071015 -10 0.4 103 ~ 5B4AIF JH1BNC -10
20210615_071015 -17 0.2 525 ~ 5B4ALJ JA0EOK -04 ^
20210615_071015 -21 0.2 654 ~ 5B4ALJ JL3LSF -10 ^
20210615_071015 -12 0.1 1794 ~ 4Z1UF JI1LET +08
20210615_071015 -16 0.1 1731 ~ 4Z1UF JA1UXO -12
20210615_071015 -16 0.3 511 ~ 4X1TI JH4UYB -16
20210615_071015 -18 0.2 3143 ~ SV8JNL JA6OXT -20
20210615_071015 -23 0.1 575 ~ 5B4AIF JK1OZS -14 ^
20210615_071015 -16 0.1 2818 ~ 5B4AIF JA1MZL -15
20210615_071015 -21 0.2 2924 ~ 5B4ALJ JA2LMA -10 ^
20210615_071015 -19 0.0 2924 ~ 4Z1UF JE7KQU -06 ^
20210615_071015 -24 0.0 325 ~ 5B4AIF JJ1LBJ -12 ^
20210615_071015 -24 0.0 2271 ~ 4Z1UF JL1UXH PM95 ^
20210615_071015 -18 0.0 2354 ~ 4Z1UF JF3DRI -09 ^
FT8 decoding benchmark ― 2021年06月17日 16時36分13秒
This wave file is from yesterday's reception of the 6m band in the JA1 area. The person who provided me with this file said that there were 106 stations decoded in one period at that time. When he tested with the saved file later, it was 87 stations max.
How many stations can you decode in your environment?
Unzip the downloaded zip file and put the wave file in a folder of your choice, and let WSJT-X/JTDX /MSHV read it.
In my environment, it was MAX 95 decodes with JTDX optimum settings.
FT8 can't make QSOs if it can't decode, so the software's ability to decode will affect our enjoyment of FT8 operation.
Let's optimize each person's PC and software settings and enjoy FT8.
Here are some tips for optimizing JTDX.
In FT8 (and other digital modes, of course), the number of decodes can vary greatly depending on the software you choose to use, and even more so if you optimize that software. Also, setting your PC's power options to high performance will allow you to take full advantage of the CPU's performance. This is because a CPU with a boost clock function will always be in a boosted state.
Of course, using a high performance PC will also help reduce decoding time.
The software you use is of course up to you. I won't say anything about this because I'm sure you have your own beliefs and there will be repercussions if I mention it too strongly. However, if you benchmark with this file, you will have something to think about. I hope it will give you some hints about software selection, settings, and PC performance. In FT8, if you can't decode, you can't make a QSO. And if the part you can't decode contains a station you want to make a QSO with...
You have seen many times that people with smaller equipment(ex antennas) than yours in the neighborhood are making QSOs with stations that you can' t decode. Even if you have small equipment, depending on your "decoding performance", you may be able to QSO with stations that your neighbors with larger equipment could not decode.
Of course, there may be subtle differences in the surrounding noise level and radio propagation.
Here are the results of my experiment.
A comparison experiment with WSJT-X/MSHV.
I have nothing to say about it.
Yoshi JP1LRT
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The following is a list of 106 stations that were decoded in real time by the provider of this file.
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20210615_071015 -9 0.2 2043 ~ 5B4AIF JH2AMN -14 ^
20210615_071015 -3 0.1 1755 ~ 5B4ALJ JO1PSX -04
20210615_071015 -13 0.2 2166 ~ 5B4ALJ JA1WWO -03 ^
20210615_071015 -11 -0.0 1659 ~ 5B4ALJ JA1QOP -02
20210615_071015 -3 0.1 2557 ~ SV9CVY JE1POK -19 ^
20210615_071015 -8 0.2 2344 ~ 4Z1UF BG2AUE PN35 ^
20210615_071015 -4 0.3 1097 ~ UB7K 7K2PZG PM96 ^
20210615_071015 -3 0.8 363 ~ 5B4ALJ JH1ECG -10
20210615_071015 -6 0.2 1540 ~ JT1BV DS3DNT PM36
20210615_071015 -12 0.3 1025 ~ 4X1TI JH1HEJ +02 ^
20210615_071015 -15 0.6 2131 ~ 5B4ALJ JF2WGN +04 ^
20210615_071015 -3 0.0 1387 ~ 5B4AIF JA1PBV -11 ^
20210615_071015 -12 0.6 2397 ~ 5B4AIF JH1PXH 73 ^
20210615_071015 -2 0.3 146 ~ 5B4AIF JA1QUT -13
20210615_071015 -6 0.1 2822 ~ UB7K JA1NQU -16
20210615_071015 -6 0.1 1465 ~ 5B4ALJ JA3KVT -13 ^
20210615_071015 -15 0.2 2488 ~ 4X1TI JA9IPF -16 ^
20210615_071015 -11 0.2 1134 ~ 5B4ALJ JL1SAM -03 ^
20210615_071015 -6 0.1 1867 ~ 5B4ALJ JM1SZY -05 ^
20210615_071015 -10 0.1 2245 ~ 4X1TI 7L4XDT -11 ^
20210615_071015 -8 0.1 1630 ~ 4Z1UF JA1PPW +03
20210615_071015 -15 0.1 2431 ~ UR0MC JA1GPN 73 ^
20210615_071015 -6 0.2 2667 ~ 5B4ALJ JR1AIB -14
20210615_071015 -13 0.2 972 ~ BH1PFJ JM1IGJ -13
20210615_071015 -9 0.2 1164 ~ 4X1TI JN1GTG -16 ^
20210615_071015 -9 0.2 1267 ~ 5B4ALJ JH1QAX -10 ^
20210615_071015 -7 0.2 1947 ~ 4X1TI JA1OVD -15
20210615_071015 -2 0.2 195 ~ 5B4ALJ JR1UFN +06 ^
20210615_071015 -3 0.1 3050 ~ 5B4ALJ JA0UUA -10 ^
20210615_071015 -10 0.1 1059 ~ 5B4AIF JH1XUM -07
20210615_071015 -5 0.1 2717 ~ 5B4ALJ JK1EXO -11 ^
20210615_071015 -9 0.1 1330 ~ 4X1TI JA1GTN -08 ^
20210615_071015 -13 0.1 1809 ~ 5B4ALJ JA1ADT -05 ^
20210615_071015 -5 0.2 743 ~ 5B4ALJ JI1EIX -04 ^
20210615_071015 -9 0.1 2194 ~ 5B4ALJ JH1USR +00 ^
20210615_071015 -13 0.1 1431 ~ 4X1TI JA2VXZ -16 ^
20210615_071015 -6 0.2 846 ~ 5B4ALJ JE1AEX -09 ^
20210615_071015 -11 0.0 982 ~ UB7K JG1MUY -09 ^
20210615_071015 -13 0.0 609 ~ 5B4ALJ JA1MLV PM95 ^
20210615_071015 -14 0.5 1274 ~ 4Z1UF JA1ITJ -11 ^
20210615_071015 -12 0.1 2496 ~ 4X1TI JF2KOZ -12
20210615_071015 -13 0.9 992 ~ 5B4AIF JA9CHI -16 ^
20210615_071015 -4 0.2 2634 ~ 4Z1UF JA1PAD -18
20210615_071015 -12 -0.2 927 ~ 4X1TI JA7EVP -06
20210615_071015 -8 0.1 2795 ~ 4Z1UF JH3IVO -06 ^
20210615_071015 -7 0.1 2221 ~ CQ DX JA1BOP PM95
20210615_071015 -13 0.1 468 ~ 4Z1UF JA0IXW -07 ^
20210615_071015 -12 -0.0 799 ~ 5B4ALJ JA3LZS -13 ^
20210615_071015 -12 -0.0 2884 ~ 4Z1UF JH1SJN -08 ^
20210615_071015 -10 0.1 704 ~ 5B4ALJ JL1OZI -03 ^
20210615_071015 -16 0.1 1316 ~ 5B4ALJ JA1SCE -02 ^
20210615_071015 -11 0.2 2941 ~ R6KA JR1IJV -17
20210615_071015 -10 0.1 1441 ~ 5B4AIF JH6OJD/P -06
20210615_071015 -12 0.1 2509 ~ 5B4ALJ JQ1IBI RR73 ^
20210615_071015 -14 0.2 2581 ~ 4X1TI JA1UAV -16 ^
20210615_071015 -10 -0.2 477 ~ 5B4AIF JA1TGO -11
20210615_071015 -9 0.1 1873 ~ 5B4ALJ JA9NLE -14 ^
20210615_071015 -13 0.1 566 ~ 5B4AIF JA9APS -16
20210615_071015 -12 0.1 2351 ~ 4X1TI JE1CCD -10 ^
20210615_071015 -18 0.1 510 ~ 4Z1UF JL1IEO -05 ^
20210615_071015 -14 0.1 2454 ~ 4Z1UF JH1MFN -10 ^
20210615_071015 -13 0.0 2399 ~ 4X1TI JA9FFS -16 ^
20210615_071015 -11 0.1 1018 ~ 5B4ALJ JP7EIP -01 ^
20210615_071015 -12 0.3 268 ~ UB7K JQ1COB PM95 ^
20210615_071015 -12 0.1 942 ~ 4X1TI JH2GZY PM94 ^
20210615_071015 -9 0.1 2604 ~ 5B4ALJ 7K4DHB -11 ^
20210615_071015 -11 0.1 865 ~ 4X1TI JA2IVK -15 ^
20210615_071015 -9 0.1 231 ~ 5B4ALJ JA1WSK -16 ^
20210615_071015 -12 0.3 1173 ~ 5B4ALJ JR2HRR -04 ^
20210615_071015 -11 0.1 678 ~ 4X1TI JA1AFR -12
20210615_071015 -13 0.0 1179 ~ 4X1TI JA4CQS -15
20210615_071015 -11 0.1 2885 ~ 4Z1UF JR4VEV -19
20210615_071015 -10 0.2 1826 ~ 5B4ALJ JK1SQI -02
20210615_071015 -15 0.0 904 ~ 4Z1UF JE2FJI PM84
20210615_071015 -9 0.1 253 ~ 4X1TI JA7CSS -20
20210615_071015 -14 0.3 2144 ~ CQ JA9KRO PM86 *
20210615_071015 -16 0.3 310 ~ 5B4ALJ JF0JYR -04 ^
20210615_071015 -16 0.0 1716 ~ 5B4ALJ JI1CUL PM95
20210615_071015 -16 0.2 1338 ~ 5B4AIF JA2XCR -13
20210615_071015 -15 0.1 1284 ~ 4X1TI JA4NUE -14
20210615_071015 -15 -0.6 1655 ~ 4X1TI JE1BBX -09
20210615_071015 -18 0.3 379 ~ 4X1TI JA3JTG -13 ^
20210615_071015 -14 0.0 1709 ~ 5B4ALJ JA1DKT -14
20210615_071015 -15 0.1 1637 ~ 5B4ALJ JK1TCV -09 ^
20210615_071015 -16 0.2 1506 ~ 5B4ALJ JA2HOL PM95 ^
20210615_071015 -14 0.1 796 ~ 5B4ALJ JH4CPC -12 ^
20210615_071015 -12 0.1 809 ~ 5B4ALJ JA9IPH -08 ^
20210615_071015 -14 0.2 2744 ~ 4Z1UF JR1CAD PM95
20210615_071015 -22 0.3 338 ~ 5B4ALJ JA7CVL -15 ^
20210615_071015 -15 0.1 530 ~ 5B4AIF JE1NHF -11
20210615_071015 -15 0.0 639 ~ 5B4AIF JH1LPF -08
20210615_071015 -12 0.0 405 ~ 5B4ALJ JE1FQV -09 ^
20210615_071015 -10 0.4 103 ~ 5B4AIF JH1BNC -10
20210615_071015 -17 0.2 525 ~ 5B4ALJ JA0EOK -04 ^
20210615_071015 -21 0.2 654 ~ 5B4ALJ JL3LSF -10 ^
20210615_071015 -12 0.1 1794 ~ 4Z1UF JI1LET +08
20210615_071015 -16 0.1 1731 ~ 4Z1UF JA1UXO -12
20210615_071015 -16 0.3 511 ~ 4X1TI JH4UYB -16
20210615_071015 -18 0.2 3143 ~ SV8JNL JA6OXT -20
20210615_071015 -23 0.1 575 ~ 5B4AIF JK1OZS -14 ^
20210615_071015 -16 0.1 2818 ~ 5B4AIF JA1MZL -15
20210615_071015 -21 0.2 2924 ~ 5B4ALJ JA2LMA -10 ^
20210615_071015 -19 0.0 2924 ~ 4Z1UF JE7KQU -06 ^
20210615_071015 -24 0.0 325 ~ 5B4AIF JJ1LBJ -12 ^
20210615_071015 -24 0.0 2271 ~ 4Z1UF JL1UXH PM95 ^
20210615_071015 -18 0.0 2354 ~ 4Z1UF JF3DRI -09 ^
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