Hi my friends,

I have build new  as  Duplex_Mini hotSPOT board with Ceramic Antenna

please consider , buy now: https://www.bi7jta.org/shop/duplex-mini-hotspot-board-with-ceramic-antenna-84#attr=119

User‘s Manual  

PDF Download https://www.bi7jta.org/files/UserManuals/

Youtube Page  https://www.youtube.com/wintershuang

WIKI: www.bi7jta.org/wiki

Name:   RPiZW SPOT HAT for RPi Zero W

Model:  Model_ZW_SPOT_HAT

Saves power.
Support Raspberry Pi 3B, Pi ZERO, Compatible with NanoPi NEO, Orange Pi, Compatible to BlueDV(Required to add USBtoTTL or Bluetooth model)

Not support Raspberry Pi 3B+, Raspberry 4B (Recommend use the Duplex HAT instead , if you own this model Raspberry Pi )
High-quality  TCXO, stable with low BER.
Support VHF/UFH, frequency range: 144MHz-148MHz, 420MHz-475MHz,842MHz-950MHz (depend on ADF7021 and TCXO, HAT's Firmware Amateur radio brand license limit)
Support MMDVM mode DMR/YSF/P25/NXDN/DSTAR/POCSAG
Support upgrade online
Humanization, special design position for OLED and Nextion, reserved Bluetooth module Extra install

Including:

1X RpiZW_HAT contains 5CM Straight antenna, (not right angle antenna)  (black color ).

Product shows 

SHIPPING:  https://www.bi7jta.org/cart/index.php?route=product/product&product_id=51

PAYMENT : Paypal offline