10m/12m - John's Vademecum

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====== 10m/12m ======

** A diversion into 10m and 12m **

===== Equipment =====

  * <del>Shack : [[public:musings:radio:radio_database:crt_ss9900|]]</del>
  * Shack : [[public:musings:radio:radio_database:ic706|]]
  * Mobile :  [[public:musings:radio:radio_database:anytone_smart|]]

==== Antenna ====

  * Sleeve "T2LT" dipole 
    * Sloping at approx. 45°
    * Choke 5T 110mm diameter air wound

  * Choke design recommendations : 


{{:public:radio:active:choke_impedances.png?600|}}

{{:public:radio:active:img_20230521_165038_495.jpg?400|}}
{{:public:radio:active:img_20230521_165054_891.jpg?400|}}

  * Update 22/5/23 : Moved to fully vertical with choke/feedpoint 2m agl and tip @ 7m agl 
    * using 7m "Sota pole"
  * Update 4/6/12 : moved back to sloping configureaton on original 5m long pole, and choke/radiator/feedpoint changed to suit 12m : choke now 6T on 110m former at 3m from "feedpoint"
    * radiator section lengthened to 3m.

(Photo to follow)
===== Propagation Data =====


==== 10m WSPR Spots vs SFI & K indices ====

^Date      ^Time First Spot^Time Last Spot^Power^Spots In^ Min/Max/Ave km^Spots Out^Min/Max/Ave km^ SFI ^ SSN ^ K ^ 48H Flare^
| 10/05/23 |  (1442)  |   2010     |  5W |      3   |   2939 / 2939 / 2939   |   26        |  2939 / 10373 / 4043 | 180 | 151 | 5 |   M6.5   |
| 10/05/23 |   2332   |   0122     |  5W |      7   |  1008 / 1605 / 1297    |    9        |  1175 / 1743 / 1348  | 180 | 151 | 5 |   M6.5   |


Last Update : ~~LASTMOD~~


===== Further Information =====

  * [[https://www.radio-workshop.co.uk/cb-radio-citizens-band-27mhz-11-metres/]]


{{tag>radio 10m 11m cb}}

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