The Squeaky Wheel
|Name||Squeaky Wheel, Скрипящее колесо|
|Frequencies||3828 (nighttime), 5473 (daytime)|
|Voice||Male and female, live|
|Emission mode||J3E (USB)|
|Location||Rostov-on-Don, Russia; location not confirmed, either the 72nd Communication Hub, or the 4th Air Defense Army
|Known counterpart stations||The Pip|
"The Squeaky Wheel" is a Russian military commandment network, serving the Southern Military District. It broadcasts on 5473 kHz during daytime, changing to 3828 kHz for nighttime.
Aside from its signature channel marker, it broadcasts mainly the following types of messages:
- Routine propagation checks, addressed to multiple recipients at a time, identified using word + number callsigns. Example: Для ОТПОР-89, ПЕСОЧНЫЙ-21, ШУЛЕР-60, СТУПА-32, РЕЗИНА-38, БУРКА-37. Как слышно, как слышно? Приём (English: For [...]: How do you hear me, how do you hear me? Over).
- "Monolith" type messages, addressed to the circular callsign Альфа-45 (tr. Al'fa-45).
The frequency switch-over times depend on the month. All times given are Moscow time (MSK, UTC+3).
|3828 → 5473||09:00||08:00||?||08:00||09:00|
|5473 → 3828||17:30||18:00||?||18:00||17:30|
Pip/Squeaky Wheel connection
We have known Pip and Squeaky Wheel to be associated with each other for several years now owing to several factors. When a "monolith" is transmitted by Pip with the callsign 8S1Shch (8С1Щ) there is always a following "monolith" message transmitted by Squeaky Wheel with the callsign Al'fa-45 (Альфа-45) between 2 and 10 minutes afterwards, albeit with different message content.
There have been instances of transmission from Squeaky Wheel with clearly audible Pip channel marker in the background having been picked up by the operator's microphone such as the below example. This demonstrates a direct connection in that the Squeaky Wheel operator is clearly monitoring the Pip. As can be deduced from the complete lack of follow-on message from Pip after a Squeaky Wheel transmission and also having never observed Squeaky Wheel channel marker bleeding into Pip transmissions, it seems that Pip does not need to monitor Squeaky Wheel.
Finally, as a "smoking gun", we have observed transmissions from both stations directed to the same unit(s) - callsign PMV5 (ПМВ5) is a good example of this, it is often asked to confirm reception with Pip in standard "dlya" messages and in April 2017 received a monolith transmission alongside two other callsigns transmitted from Squeaky Wheel.