# Emon Tx V4 and 433MHz Radio Formats

**URL:** <https://community.openenergymonitor.org/t/emon-tx-v4-and-433mhz-radio-formats/22085>\
**Category:** Hardware\
**Created:** [8 December 2022 11:54 UTC](https://community.openenergymonitor.org/t/emon-tx-v4-and-433mhz-radio-formats/22085 "2022-12-08T11:54:37Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![rupert](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/r/f14d63/32.png) [@rupert](https://community.openenergymonitor.org/u/rupert)\
**Post date:** [12 February 2023 13:37 UTC](https://community.openenergymonitor.org/t/emon-tx-v4-and-433mhz-radio-formats/22085/18 "2023-02-12T13:37:18Z")

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Well I can only say that my recent Mk2 PV router (English version) kit came with an RFM69CW …

What I meant in the table was that the Mk2 PV router kit needed to include the RF hardware option and that the appropriate firmware was used.

I don’t know if or when Robin changed from supplying the RFM12B to the RFM69CW. His parts list includes both the RFM12B and the RFM69CW.

I believe there are some discussions at [The emonPiCM - #42 by alandpearson](https://community.openenergymonitor.org/t/the-emonpicm/18173/42) on RFM12B vs RFM69CW. I don’t know if this helps.

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