# RF connection: 10 U.FL connectors (6 RX, 4 TX)?

**URL:** https://discourse.myriadrf.org/t/rf-connection-10-u-fl-connectors-6-rx-4-tx/305
**Category:** LimeSDR
**Created:** [29 April 2016 18:18 UTC](https://discourse.myriadrf.org/t/rf-connection-10-u-fl-connectors-6-rx-4-tx/305 "2016-04-29T18:18:18Z")
**Posts on this page:** 1
**Showing post:** 9

<div class="post-metadata">

### Author: ![RicardasVadoklis](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@RicardasVadoklis](https://discourse.myriadrf.org/u/RicardasVadoklis)
#### Post date: [27 June 2016 10:37 UTC](https://discourse.myriadrf.org/t/rf-connection-10-u-fl-connectors-6-rx-4-tx/305/9 "2016-06-27T10:37:18Z")

</div>

@mikos ,@ricsi,

LMS7002M has 3x Rceiver RF inputs and 2x Tx output per channel. By design receiver inputs are tuned as follows:

- LNAL - from 0.1 MHz to 2000 MHz. Gives a noise figure \<2dB.
- LNAH - from 1500 MHz to 3800 MHz. Gives a noise figure \<3dB.
- LNAW - from 0.1 MHz to 3800 MHz. Gives a noise figure 5-7dB. Usually used for sniffing.

Transmitter output bu design are similar and supported frequency range is form 0.1-3800 MHz.

However, every RF input/output is combined with RF matching network which might be band specific. On the LimeSDR the RF inputs/outputs are tuned for:

- LNAL - is tuned for 800 - 900 MHz (3GPP Band V).
- LNAH - is tuned for 1900 MHz (3GPP Band I).
- LNAW - has broadband matching up to 2000 MHz.
- TXout1 - is tuned for 2600 MHz (3GPP Band VII) .
- TXout2 - has broadband matching up to 2000 MHz.

The matching network includes broadband Balun + network for fine tune for specific band, hence can be easily modified.

@ricsi

The LMS7002M synthesizer frequency range is from 30 MHz - 3800 MHz. We are using internal NCO to get us to 100 kHz region.

Best,  
Ricardas

---

_[View the full topic](https://discourse.myriadrf.org/t/rf-connection-10-u-fl-connectors-6-rx-4-tx/305)._