{"id":12552,"date":"2015-03-05T16:24:06","date_gmt":"2015-03-05T20:24:06","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=12552"},"modified":"2015-03-05T16:24:06","modified_gmt":"2015-03-05T20:24:06","slug":"can-you-help-george-identify-the-mystery-pip","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2015\/03\/can-you-help-george-identify-the-mystery-pip\/","title":{"rendered":"Can you help George identify the mystery pip?"},"content":{"rendered":"
\"WWV<\/a>

WWV format<\/p><\/div>\n

SWLing Post<\/em> reader, George (NJ3H), writes:<\/p>\n

I quite often see a spike in the evening on 4996 khz. From the listing, this is suppose to be RWM, in Moscow<\/a>, a time signal station.<\/p>\n

When I listen on remote receivers in Poland and Denmark, I do not hear time pips, but rather just hash.<\/p>\n

On my Perseus, I can watch the spike go up and down each second. This makes me think it is caused by WWV. However, the 29th second seems to make the spike move up, even though WWV doesn’t have a pip at second 29. The remote receivers in Europe that I just mentioned do not have any time pips being broadcast. Does WWV cause a signal on 4996?<\/p>\n

Can you shed any light on 4996? Should we be able to hear RWM in the Eastern US?<\/p><\/blockquote>\n

Good question, George, and I’m hoping a reader can shed some light on what you’re seeing on the spectrum display. I’m not sure what could be causing the 29th second spike unless it’s WWV transmitting a sub-audible tone.<\/p>\n","protected":false},"excerpt":{"rendered":"

SWLing Post reader, George (NJ3H), writes: I quite often see a spike in the evening on 4996 khz. From the listing, this is suppose to be RWM, in Moscow, a time signal station. When I listen on remote receivers in Poland and Denmark, I do not hear time pips, but rather just hash. On my […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[3,43],"tags":[3673,3672,1714,68],"class_list":["post-12552","post","type-post","status-publish","format-standard","hentry","category-news","category-shortwave-radio","tag-rwm","tag-rwm-moscow","tag-time-stations","tag-wwv"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-3gs","jetpack-related-posts":[{"id":66208,"url":"https:\/\/swling.com\/blog\/2026\/05\/time-stations-from-the-1970s-heard-in-ontario-canada-and-what-you-can-still-hear-today\/","url_meta":{"origin":12552,"position":0},"title":"Time Stations from the 1970s Heard in Ontario, Canada \u2014 And What You Can Still Hear Today","author":"Thomas","date":"May 29, 2026","format":false,"excerpt":"by Dan Greenall Time and standard frequency stations have been around for a long time.\u00a0 In my early years of DXing, there were more than 20 of them scattered all over the globe.\u00a0 These two pages from the 1972 World Radio TV Handbook show what could be heard back then,\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2026\/05\/JJY-Tokyo-Japan-1983.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2026\/05\/JJY-Tokyo-Japan-1983.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2026\/05\/JJY-Tokyo-Japan-1983.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2026\/05\/JJY-Tokyo-Japan-1983.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2026\/05\/JJY-Tokyo-Japan-1983.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":3942,"url":"https:\/\/swling.com\/blog\/2015\/12\/the-empire-strikes-back-is-that-wwv-i-hear\/","url_meta":{"origin":12552,"position":1},"title":"The Empire Strikes Back: Is that WWV I hear?","author":"Thomas","date":"December 21, 2015","format":false,"excerpt":"With all of the Star Wars: The Force Awakens hype going on, I remembered that, as a kid, I thought I heard WWV in a scene from\u00a0The Empire Strikes Back. I looked through some video clips of the movie online and discovered it again this morning:\u00a0I heard the WWV-like sound\u2026","rel":"","context":"In "Art"","block_context":{"text":"Art","link":"https:\/\/swling.com\/blog\/category\/art-2\/"},"img":{"alt_text":"Fullscreen capture 12202015 40448 AM","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":16378,"url":"https:\/\/swling.com\/blog\/2015\/12\/thats-time-station-chu-in-the-empire-strikes-back\/","url_meta":{"origin":12552,"position":2},"title":"Time station CHU in The Empire Strikes Back","author":"Thomas","date":"December 21, 2015","format":false,"excerpt":"Earlier today, I published a post noting that I thought I heard the time station WWV in a scene of The Empire Strikes Back. SWLing Post reader, RadioGeek, quickly corrected me: that's Canadian time station CHU's data pips I'm hearing, not circa-1980s WWV. \u00a0Cool! Listen for yourself Here's the clip\u2026","rel":"","context":"In "Art"","block_context":{"text":"Art","link":"https:\/\/swling.com\/blog\/category\/art-2\/"},"img":{"alt_text":"Fullscreen capture 12202015 40448 AM","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/12\/Fullscreen-capture-12202015-40448-AM.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":9224,"url":"https:\/\/swling.com\/blog\/2014\/04\/wwv-experimental-broadcasts-on-25-mhz\/","url_meta":{"origin":12552,"position":3},"title":"WWV: experimental broadcasts on 25 MHz","author":"Thomas","date":"April 8, 2014","format":false,"excerpt":"Want to catch WWV--the Fort Collins-based time station--on a frequency they haven't used since 1977? The National Institute for Standards and Technology (NIST) has sent out a press release stating that, as of April 4, 2014, WWV will resume broadcasting on 25 Mhz for a limited time. Full details follow\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"WWV format","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2011\/08\/WWVformat-300x227.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":27156,"url":"https:\/\/swling.com\/blog\/2017\/07\/wwv-seeking-reception-reports-of-25-mhz-broadcast\/","url_meta":{"origin":12552,"position":4},"title":"WWV seeking reception reports of 25 MHz broadcast","author":"Thomas","date":"July 15, 2017","format":false,"excerpt":"(Source: WWV) Current 25 MHz Broadcast Specifications As of 2042 UTC 7 July 2017 the 25 MHz broadcast is now on a turnstile antenna with circular polarization and will remain in this configuration until after the solar eclipse on 21 Aug 2017.\u00a0 Signal reports are requested. Schedule: typically continuous. As\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/06\/WWV-Main-Building-1024x463.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/06\/WWV-Main-Building-1024x463.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/06\/WWV-Main-Building-1024x463.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":40086,"url":"https:\/\/swling.com\/blog\/2019\/10\/nist-radio-station-wwv-celebrates-a-century-of-service\/","url_meta":{"origin":12552,"position":5},"title":"“NIST Radio Station WWV Celebrates a Century of Service”","author":"Thomas","date":"October 7, 2019","format":false,"excerpt":"(Source: NIST Blog via Eric McFadden) NIST Radio Station WWV Celebrates a Century of Service By Laura Ost What technological application has had musical, timekeeping, navigational, scientific, traffic-control, emergency-response, and telephone applications? Answer:\u00a0WWV, one of the world\u2019s oldest continuously operating radio stations. NIST received the call letters WWV a century\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/10\/WWV-NIST-aerial_view_16x9_0_0_0-1024x576.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/10\/WWV-NIST-aerial_view_16x9_0_0_0-1024x576.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/10\/WWV-NIST-aerial_view_16x9_0_0_0-1024x576.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/12552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=12552"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/12552\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=12552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=12552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=12552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}