I look up local hams I hear on the FT8 digital mode. Sometimes I know the neighborhood or would like to visit parks or creeks nearby. See Spark Decodes
Hams on FT8 WEBLINK https://www.google.com/maps/search/?api=1&query={LAT},{LON} 45.5223312,-122.6314468 K7REK 45.5413568,-122.7996473 WQ3U 45.4030093,-122.9952450 K7YDL 45.6972326,-122.5115791 KB7AK 45.4200594,-123.0259679 N7IDB 45.4595954,-122.8148624 KA7EXM 45.4498134,-122.7072812 WA6GBW 45.6557622,-122.5283492 W6IWW 45.6975419,-122.5829146 NE7O 45.4375907,-122.7697429 N7KPN 45.5477002,-122.8520895 WJ7WJ 45.4891249,-122.7220492 WB6OEE 45.6028566,-122.4485276 K7NOJ 45.6939770,-122.5844995 NZ7P 45.6914339,-122.6660843 W7OIL 45.6012957,-122.4375158 WJ7C 45.3666046,-122.8448148 WN6W 45.3012168,-122.9604197 K7IUK 45.4921337,-122.7171033 WX7OR 45.2722298,-122.6815001 KK7ART 45.6583750,-122.6501096 KI7RI 45.6100121,-122.5436847 KT7G 45.6407647,-122.5398370 N7DLI 45.5208333,-122.7916667 KX7YT 45.6678651,-122.6739416 W7BP 45.6382367,-122.5026004 K7GUN 45.5214534,-122.4844489 KK7N 45.6373417,-122.4795074 K7AR 45.7152694,-122.6301062 W7SLS 45.7592620,-122.8788134 K0JJ 45.6196727,-122.9298979 KG7BF 45.4354804,-122.6246652 KI7RM 45.4004653,-122.5917885 W7MTL 45.3147798,-122.9762084 N7IW 45.5429082,-122.9713134 N7RLG 45.5214860,-122.4849707 KX7N 45.3128686,-122.7494269 KI7SRQ 45.6249593,-122.1465756 KB7MA 45.4721677,-122.8544916 W7SO 45.4889993,-122.4167332 KJ7RZA 45.5638099,-122.8948179 KN7K 45.5865016,-122.4040377 KI7KLT 45.3131792,-122.8010007 KF7O 45.4910240,-122.7506849 W7JNM 45.5044965,-122.8846501 K7BAZ 45.2882543,-122.5372385 K7IYB 45.5921830,-122.4385689 W7DN 45.5921830,-122.4363802 AB9O 45.8670755,-122.6698644 W7CHE 45.5194058,-122.6073479 KC7VH 45.7377257,-122.878851 K7JWN 45.4647827,-122.8916208 KE7AUB 45.4076191,-122.8032556 N7KMM 45.5078580,-122.9500579 N7CTB 45.6496328,-122.5417291 WB7BBU 45.3329886,-122.9223349 WB6JJJ 45.5609364,-122.8620984 K7UIN 45.4579348,-122.8155531 KR7X 45.6837877,-122.5154645 WA7VBA 45.6315548,-122.6237083 N7YAE 45.1973946,-123.1933427 KD7WII 45.4568163,-122.6265527 AB7DY 45.8160870,-122.9991775 KI7ADJ 45.2559896,-122.4238952 K7IFG 45.4889760,-122.7600912 W7RAT 45.8415387,-122.4532334 WA7JMA 45.6486631,-122.5442526 K7ALO 45.4273295,-122.7213302 K7PJM 45.3933650,-122.7951620 KE7UAE 45.4018020,-122.7871798 KA6T 45.5413641,-122.8380292 N7LBH 45.4593606,-122.7221686 KI7G 45.5362633,-122.9142166 W1ZPB 45.2120676,-123.2222564 AA7TC 45.6924373,-122.6499358 N7JB 45.5534913,-122.8621325 KJ7IY 45.4660397,-122.7693459 KJ7JS 45.5604353,-122.8360895 KF7YBT 45.2947506,-122.9574723 KJ7NUY 45.6429579,-122.6934564 K7CCC 45.5473390,-122.9922980 KG7UX 45.6815428,-122.4493961 N7RYP 45.3457952,-122.9842964 K5VP 45.8214927,-122.7490044 W7DLR 45.0022620,-123.0183167 N7UVA 45.2133895,-123.2174055 W7CAI 45.5620009,-122.8566332 KC8ESJ 45.3373019,-122.7232335 KI7VEM 45.3271761,-122.9370341 K6UM 45.6736562,-122.6692933 N7MYW 45.5468404,-122.8248800 WN7FVN 45.6952772,-122.5905315 N7RGE 45.4179684,-122.7951433 WR7T 45.4582709,-122.8046960 W7ZI 45.5123304,-122.5171160 AF7TT 45.5122422,-122.6285513 KS0T 45.4775758,-122.8416815 N7FKI 45.3411917,-122.6253902 AE7SI 45.5937541,-122.9084672 KC7PMU 45.5204642,-122.9327482 KI7N 45.4771957,-122.6108218 K7AFE 45.4334520,-122.5293096 N7FJC 45.8592154,-122.8208232 KJ7AXA 45.5824630,-122.7494551 K0CAW 45.5177597,-122.5676453 K7ENN 45.3021150,-122.5348597 W7ZWW 45.4966826,-122.6076934 W7FAB 45.4184342,-122.3427529 NC7M 45.5252274,-123.1075511 N7NDR 45.3930054,-122.2699303 N7OR 45.5058560,-122.8931728 K7OVM 45.5181539,-122.7757365 K7RF 45.8975147,-122.8184075 KF7UGG 45.6561196,-123.1053855 WI7N 45.5430927,-122.8078404 W7TYN 45.2900496,-122.7513176 K7RTK 45.4641265,-122.8464205 AC7NU 45.6422532,-122.6539777 K7JBL 45.5004035,-122.7548737 AG7UT 45.8539692,-122.8040513 N7CHS 45.4895414,-122.6236170 KG7M 45.4262725,-122.7994984 K7QXY 45.7437584,-122.8692365 W7CO 45.5367538,-122.5741465 N7ILZ 45.5529756,-122.8440854 K7JPF 45.5706917,-122.6464355 W7OTL 45.5126957,-122.8759586 N7LYS 45.8529350,-122.8529110 KF7UXR 45.5060110,-122.6400086 KJ7LOW 45.8278785,-122.4696156 WA6NFJ 45.6434729,-122.4437471 KC5MPS 45.7168243,-122.6665354 AB7RW 45.4327368,-122.8030071 KB7AB 45.3351903,-122.5646931 W7RWP 45.6028741,-122.5191189 K3RW 45.4570013,-122.6317426 KI7KNM 45.5478953,-122.8583568 W7JMM 45.6809395,-122.6348455 WA6QZC 45.8607209,-122.8467526 AI7NN 45.5584398,-122.653868 AC7KE 45.4779802,-122.5016854 W7EWJ 45.3851066,-123.0476645 AD7L 45.5298500,-122.8913400 AC7FD 45.5168422,-123.0555848 N7FNA 45.5383516,-122.9649977 KE7WRX 45.6832010,-122.5724614 KF7OJA 45.5491150,-122.8702631 KI7ZRF 45.5770270,-122.7235422 KM7Q 45.2966420,-123.0117037 W7OWO 45.5336186,-122.8662178 WA4NDR 45.5223676,-122.6314746 K7REK 45.5534109,-122.830431 KK7ER 45.0192789,-123.0176289 WA7CXG 45.5020552,-122.7838489 AF7VC 45.5882615,-122.4591916 K7BDB 45.5302901,-122.6801672 KW7WP 45.2152152,-123.0901560 AA1AO 45.5622472,-122.6608351 K2BVR 45.5952892,-122.8775137 KD7GX 45.4491233,-122.6213968 KJ7BRE 45.5952892,-122.8775137 KD7GX 45.4491219,-122.6213699 KJ7BRE 45.4669830,-122.8885740 N8SQT 45.3827273,-122.2682280 N7TNP 45.5335153,-122.6116595 N7IMB 45.5600284,-122.6309288 AF7SO 45.1595080,-122.8489490 WB7PGB 45.3141313,-122.7939015 KA7OLK 45.6334105,-122.3708113 AG7SU 45.4338259,-122.4172282 K7NWT 45.8409988,-122.5446881 WA7L 45.4473319,-122.2568810 N0WAB 45.6181931,-122.5752303 AD7MC 45.4621799,-122.6862140 K7WDO 45.6761956,-122.5808471 NS7U 45.4755302,-122.8274152 K7QL 45.3774757,-122.6532334 KX7F 45.9978344,-123.2532311 KC7WUM 45.5058626,-122.6068028 K7VBY 45.6274090,-122.5400372 KE7ZAC 45.2152152,-123.0901560 N1SLO 45.4510313,-122.6965870 W7SKW 45.5442876,-122.6329663 K7PUO 45.4052305,-122.5841578 KC6RZW 45.4314038,-122.7275513 KE7MSU 45.6962217,-122.5492293 KI7WIG 45.4340716,-122.5606850 KK7DS 45.5262534,-122.6840549 KJ7RUP 45.5051215,-122.8836073 KE7NKR 45.2206134,-122.7590635 WB7UBC 45.5274350,-122.5984242 N7BBU 45.1615500,-122.5314801 W7GJP 45.5274350,-122.5984242 N7BBU 45.1615500,-122.5314801 W7GJP 45.6382684,-122.5024787 AI9Q 45.2516708,-122.6869812 KJ7WRB 45.4890790,-122.4166280 KG0INS 45.5890312,-122.7536621 AA7BK 45.4449166,-122.5507618 W7RTA 45.5868460,-122.4510380 WA7FLY 45.6032087,-122.3019657 K5DTC 45.5030136,-122.9519424 W7BDP 45.6248531,-123.2329846 KG7ACX 45.6138677,-122.5840550 N7TCV 45.5383570,-122.8495710 W7RPS 45.5691490,-122.6488419 W7TER 45.3978909,-122.6070271 KJ7UIS 45.4713990,-122.6217690 KJ7GVL 45.3846669,-122.9764658 KJ7UCF 45.5038261,-122.7706375 N7TOY 45.5078890,-122.9754590 KJ7VPH 45.4663840,-122.8164980 K7ANK 45.4596406,-122.8485300 N7IQM 45.4685851,-122.8465756 W7ONY 45.7889641,-122.4391821 WA8ZNC 45.2674235,-122.8381450 AH6LE 45.4648318,-122.7743834 N7RJA 45.5761410,-122.3306160 W1BUS 45.6907774,-122.6945664 N7ZZE 45.5322860,-122.7062960 K7FU 45.5132904,-122.6816940 K7YXZ 45.5481033,-122.8178388 KW2B 45.4442447,-122.6323008 W7EEC 45.4704671,-122.7693686 AD7WB 45.3843439,-122.7335292 W6AGZ 45.5026020,-122.8655640 NT7S 45.6406059,-122.6233673 KB7ME 45.4566560,-122.6265740 KE7X 45.7136900,-122.7049490 WZ8T 45.4797750,-122.4276860 W7XE 45.4543059,-122.8375195 N7KOM 45.4032744,-122.6880229 N1ACW 45.5179190,-123.1044070 N7GR 45.4207980,-122.8064400 AE7TM 45.2938402,-123.0114780 KG7DC 45.5133820,-122.6032960 KJ7DGH 45.4939810,-122.5556840 KF7WRS 45.5459009,-122.8387057 W7CMT 45.3725198,-122.3204353 AG7RC 45.5435480,-122.6038550 K7VIT 45.3488187,-122.6666668 K0LRM 45.4944305,-122.5787277 N7UL 45.4864910,-122.5920710 KI7JFH 45.5119298,-122.7897708 KT7FOX 45.4562425,-122.8447807 AB7WT 45.8577350,-122.7995450 K7STB 45.5402270,-122.6476400 W7SOE 45.4194821,-123.0215685 AI7HF 45.6690090,-122.6648350 KW7IBE 45.3935120,-122.8072340 K7UFO 45.7156460,-122.4234420 WA7JG 45.3272707,-122.6256032 NM7C 45.6257540,-122.4486640 N7BIN 45.8068050,-122.5297519 KJ7WRF 45.2491885,-122.6840512 W7JOI 45.5418820,-122.9721060 KJ7PZV 45.3308910,-122.5903480 KI7BDP 45.2914800,-122.5463560 K7ZPJ 45.7620190,-122.7342090 KK7AXO
We copy-paste these markers from a program that detects newly heard stations. We suspect that we might have created duplicate entries as this workflow was emerging. So we check where this has happened.
Geocoding amateur radio callsigns. post 
http://trails.ward.asia.wiki.org/assets/pages/places-heard-on-ft8/call-sign-check.html HEIGHT 100
pages/places-heard-on-ft8