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CZK - RM31 (Vertikalni tycova antena)

Vertikalni tycova antena RM31 with kapacitnim hat

This vertikalni tycova antenna has been developed for pechotni version of the radio station RM31-P and the cell antenni system was umisten in rucniho dynamo ZD 31-1 pohaneneho two cranks umistenymi on skladaci design sedackou for the operation of the tvorici with nositky and platenym cover assy MB 31-3 on rozmerech 230x540x260 mm with a total weight of 21.5 kg.

Platene case RM31-5 in the classical khaki color contained 18pcs tycek from-kalen steel with medenou layer and a patent finish grooming. Each tycka in overall, fiberglass shaft, 530mm had on their koncich after one vnitrnim and vnejsim zavitu. Set in case included dale hlinikovou ruzici, a set of kotevnich snur, patni izolator and other minor lodgings.

According to the needs and actual price conditions it was possible from the set to construct two types of antenna:

1. Standard best vertikalni tycova antena. With the use of all 18pcs tycek was installed overall height of 8.6 m

2. Zkracena vertikalni tycova antena with kapacitnim hat. For own vertikalni hang an antenna wire was used 12pcs tycek in the overall vysce 5.7 m and from zbylych 6pcs is compiled with the use of hlinikove ruzice on the top of the antenna kapacitni hat. Such kotvena vertikálni tycova antena approximately 5.7 m high with kapacitnim hat (hvezdici) ma spatial my zareni potlacenou and is for some types of connected profitable.

Vertikalni antena RM31 in this guided through was a it doesn as vertikal with a fixed altitude and in both cases the installation was the work product frequency (2-5.995 MHz) naladena/suited to help antenniho members RM31-3. This antenni clen was able to your range of capacities and indukcnosti customize even short tycove antenna from pechotni sets of RM31-P or zarice montovane eg. at automobilove version RM31-AND terennich cars GAZ69 or dratove dipolove antenna 2x7m NVIS, etc.

Antena wasn't due to the complicated installation and the need for dvojiho berth too oblibena and unit is her use of pri threepwood (primarily in zimnim period) carefully vyhybaly.

73 - Petr, OK1RP

Source:
Joint-21-3 Radiova station RM 31. Description, of use and having gone repairs; 1961
Description and instruction manual for kit RM 31-P (RM 31-Pa)
Mat-patch-I-31 Mala radio station RM 31-P and RM 31-AND. Description and instruction manual
Own comments of memories tatinka, OK1SP, 5. PLO/5.PLDP - Protection velitelstvi 1.tank division, Slana, VU 2478..
CZK - RM31 (Vertikalni tycova antena) - Fotografie prevzata z archivu www.csla.cz

Fotografie prevzata z archivu www.csla.cz
URL : https://www.valka.cz/CZK-RM31-Vertikalni-tycova-antena-t127015#429952Version : 0
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Vertical antenna RM31 with capacitive hat


This vertical antenna was designed and used only for RM31-P version of the radioset.(portable/field version)


The antenna suite contained the MB31-5 khaki canvas quiver with 18pcs of pipes made from tempered steel + copper after the temper. The pipes was 530mm long each with inner/outer thread. Also the aluminium rosette tool for capacitive hat, set of ropes, insulator base and some other ancils was included.


According to actual needs or field conditions it was possible to assemble 2 types of the antennas:


1. Full vertical radiator - where all of the 18pcs pipes was assembled together with total of 8.6m height.


2. Shortened vertical radiator - where 12pcs of the pipes was assembled together to make 5.7m tall vertical and rest of the pipes (6pcs) was used to create the capacitive hat on the top of the antenna using the aluminium rosette part. This type of the vertical antenna has higher radiation pattern angle if needed.


The antennas was designed as fixed height vertical radiators and in both cases antennas was tuned/matched on the operating frequencies (2-5.995MHz) using the antenna matching unit RM31-3.


This tuner was able to tune also the shorter antennas like mobile whip mounted on the GAZ69 vehicles as same as the wire antennas like 2x7m NVIS dipole etc.


As my daddy observed this vertical antenna was not so popular between the radio operators in Army as the installation was not engaging primarily in the winter time. In their troop squad the antenna has been installed just two times to practice it and never again...


73 - Petr, OK1RP


(v anglictine zpracovano pro https://greenradios.blogspot.com)
CZK - RM31 (Vertikalni tycova antena) - Fotografie prevzata z archivu www.csla.cz

Fotografie prevzata z archivu www.csla.cz
URL : https://www.valka.cz/CZK-RM31-Vertikalni-tycova-antena-t127015#429760Version : 0