40米波段，我在非洲只用cw通联过ft5xo和fr5zl，通联时间分别是utc18：08和16：42。
我猜想，qrp要通联非洲的电台，时间要算得比较准才行。因为你的功率较小，对方的接收是关键。而对方接收到你的信号较弱，所以要在对方传播条件较好且环境噪音较小的时间段进行通联才最有利。这该在什么时间段呢？只能靠常理去推断和实践摸索了。
我觉得你可以用vq9作为目标，因为它是离我们最近的非洲字头。而且上面有比较活跃的业余电台。在dx-summit上搜索到的资料：
dx-summit spot database:
ik1qhb 7015.6 vq9jc strong 1559 01 jan 2006
ve6wz 7016.0 vq9jc qsx 7017.08 few callers gud si1612 01 jan 2006
oe6dk 7016.0 vq9jc strong up!! 1629 01 jan 2006
la1ye 7016.0 vq9jc 1632 01 jan 2006
ru6md 7022.7 vq9jc cq 1608 02 jan 2006
jm1tuy 7022.0 vq9jc up 1616 02 jan 2006
jh1swd 7022.0 vq9jc up 1620 02 jan 2006
oe6mdf 7022.0 vq9jc up strong 1621 02 jan 2006
f5nod 7004.0 vq9jc just begin 1606 03 jan 2006
ok1awo 7004.0 vq9jc up,qsl via nd9m 1610 03 jan 2006
ua6jy 7004.0 vq9jc up 2 1618 03 jan 2006
wb2jep 7032.9 vq9la rtty cq strong in nj 0143 04 jan 2006
ai4lt 7034.0 vq9la 0206 06 jan 2006
ua4lu 7002.0 vq9jc up 1651 06 jan 2006
zl2al 7001.9 vq9jc qsx 7003.45 vy loud into zl 591655 06 jan 2006
sv1ehp 7002.0 vq9jc 1700 06 jan 2006
dl2zae 7002.0 vq9jc up1 big sign 1706 06 jan 2006
dl7xs 7002.0 vq9jc loud up 1723 06 jan 2006
dj6tk 7002.1 vq9jc now qrt!!! 1733 06 jan 2006
wb9pnu 7037.8 vq9la rtty test 1347 08 jan 2006
ad6wl 7037.9 vq9la 1406 08 jan 2006
ok2pay 7034.8 vq9la 1814 08 jan 2006
hg4i-@ 7034.2 vq9la rtty 1842 08 jan 2006
sv1ehp 7034.8 vq9la 1846 08 jan 2006
sv1ehp 7033.3 vq9la 1849 08 jan 2006
9a2f 7002.0 vq9jc up 1608 10 jan 2006
g3sjj 7002.0 vq9c big sig in uk 1609 10 jan 2006
f5tni 7002.0 vq9jc qsx 7002.80 1610 10 jan 2006
n7cw 7011.0 vq9jc under ssb 1457 15 jan 2006
lz1qv 7011.0 vq9jc 1501 15 jan 2006
ua3lpf 7011.1 vq9jc up 1505 15 jan 2006
zl2al 7011.0 vq9jc qsx 7012.50 jim 599+ outstandi1509 15 jan 2006
sp2jmb 7011.1 vq9jc 1510 15 jan 2006
dl6ct 7011.0 vq9jc lsn up 1-2 1519 15 jan 2006
f6gcp 7011.0 vq9jc cq na/sa 1520 15 jan 2006
f6gox 7011.0 vq9jc his grayline na pse eu qrx! 1521 15 jan 2006
w6bh 7011.0 vq9jc up 1535 15 jan 2006
dj6tk 7011.0 vq9jc jim split up/via nd9m 1547 15 jan 2006
sp7fbq 7011.0 vq9jc up 1 1549 15 jan 2006
hb9dhg 7011.0 vq9jc wkd 2.4up 1609 15 jan 2006
dl2fdl 7011.0 vq9jc up 2.4 1615 15 jan 2006
ik2ofr 7015.0 vq9jc up1 1615 16 jan 2006
rw4lc 7003.1 vq9jc cq cq up 1621 17 jan 2006
aa6np 7002.9 vq9jc qsx up 1624 17 jan 2006
sm4dde 7003.0 vq9jc up up 1635 17 jan 2006
k7ar 7008.5 vq9jc 1525 29 jan 2006
hl3ib 7008.5 vq9jc jim (nd9m), via h/c 1554 29 jan 2006
dl2ow 7008.8 vq9jc up1 qrz na 1608 29 jan 2006
dl0os 7008.6 vq9jc up1 1625 29 jan 2006
ru3by 7023.0 vq9jc 1531 01 feb 2006
it9muo 7023.1 vq9jc qsx 7024.15 1546 01 feb 2006
zl3nb 7023.0 vq9jc big sigs..lsn up 1615 01 feb 2006
dl1duo 7023.0 vq9jc 1618 01 feb 2006
ra4cq 7020.1 vq9jc 1459 04 feb 2006
9a1un 7020.0 vq9jc lsn up1 1506 04 feb 2006
ra1oj 7020.0 vq9jc big sig, via nd9m h.c. 1513 04 feb 2006
w6sl 7020.2 vq9jc lp up 1.1 1526 04 feb 2006
rv6laf 7020.0 vq9jc 1549 04 feb 2006
f6iie 7003.9 vq9jc qsl nd9m 1633 13 feb 2006
ja2ftl 7013.0 vq9jc strong 1517 26 feb 2006
ra3ut 7013.0 vq9jc 1527 26 feb 2006
dl5mev 7035.2 vq9la rtty cq.. 2152 01 mar 2006
m0bjl 7035.2 vq9la 1st call no takers rtty 2156 01 mar 2006
dl7cm 7033.0 vq9la larry cqing - hpe for 80mtrs 2204 01 mar 2006
sp2y 7033.0 vq9la rtty 2343 01 mar 2006
ik4wmh 7037.9 vq9la rtty, up 2 2355 01 mar 2006
ea2afv 7009.0 vq9la 0156 06 mar 2006
ki4ro 7009.0 vq9la qrt some still calling hi hi 0202 06 mar 2006
w3kb 7037.9 vq9la rtty 0024 09 mar 2006
ru4lm 7028.1 vq9la up 1-2 0129 09 mar 2006
yo2naa 7016.0 vq9jc beru 1936 11 mar 2006
ea6sx 7016.0 vq9jc only beru sri. need 4 new1. 1955 11 mar 2006
wb2jep 7037.9 vq9la rtty vy strong qsx up 2 0126 13 mar 2006
w4dj 7037.9 vq9la rtty wrkd up 2 strong 0133 13 mar 2006
w4dj 7039.9 vq9la not many calling qsx up 2 loud0136 13 mar 2006
n4nn 7037.9 vq9la qsx 7039.89 rtty tnx larry 0150 13 mar 2006
w3yy 7038.0 vq9la qsx up 2 rtty big sig 0157 13 mar 2006
ct1aoz 7037.9 vq9la qsx 7039.90 rtty 0200 13 mar 2006
wb1ael 7037.8 vq9la rtty up 2 0209 13 mar 2006
ad6wl 7039.8 vq9la long path! up 0210 13 mar 2006
k7hrt 7038.0 vq9la *rtty * up 2* (sp1mwk> 2353 13 mar 2006
la6fja 7038.0 vq9la qsx 7040.0 af006 rtty fsk 2 u0121 14 mar 2006
k9mug 7038.0 vq9la rtty qsx up 2 0124 14 mar 2006
ik4pkm 7037.0 vq9la rtty up2 0147 14 mar 2006
ki4ro 7037.9 vq9la up up up 2 exactly 0150 14 mar 2006
ve3xat 7037.8 vq9la tnx rtty up2 0156 14 mar 2006
n2ff 7037.9 vq9la qsx 7040.2 rtty 1237 14 mar 2006
dl3vdl 7001.0 vq9jc up1 via nd9m 1755 14 mar 2006
ua1oiz 7001.2 vq9jc up 1757 14 mar 2006
dk9py 7001.0 vq9jc 1838 14 mar 2006
w5tt 7038.0 vq9la rtty 0132 17 mar 2006
n6cw 7037.9 vq9la cq cq but no answer 0148 17 mar 2006
w4dj 7037.9 vq9la rtty qsx up 0152 17 mar 2006
rn3zq 7038.0 vq9la up2 0156 17 mar 2006
np3d 7000.0 vq9la wow got him up two 0200 17 mar 2006
w9xx-@ 7039.4 vq9la rtty qsx up 0116 18 mar 2006
w3kb 7039.3 vq9la rtty - up 2 0140 18 mar 2006
祝你早日实现7mhz上qrp的wac！
