Features: 

A small for wspr transmission hardware device based on the SI5351 chip.

This device incorporates a TCXO to for eliminate frequency for DRIFT of the SI5351 and a built-in for gps module for use with an active for gps for antenna. 

It features transmission time synchronization and automatic QTH positioning calculation, and employs a buffer based on the 74ACT244 chip.

After configuring the call sign, grid ( for gps is used by default), and frequency through the serial port, it can be used without the need for external software or code.

Specifications:

 Part Name: SI5351 for wspr

Material: ABS

Color: As shown

size: 50*20*63mm (excluding connector)

RF Connector: for SMA

Feeder: 50Ω for coaxial cable

for gps for antenna Type: Active, External

for maximum Output Power: ~23dBm

Power Supply: USB-5V

Package Contents:

1 x Device

1 x for gps for antenna

1 x for type-c Cable

Note: 

It can be used immediately after configuring the call sign, grid ( for gps is used by default) and frequency via serial port; no external software or code is required.

Payment must be completed within 5 days. If you have any problems about payment, please contact us via .

We only ship to confirmed Order addresses. Please comfirm that your Order for ADDRESS is in line with your shipping for ADDRESS.

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

It takes about 7-15 working days to US; about 10-30 working days to other countries.  for TRANSIT time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

We strive for customer satisfaction! Positive is very important to us. If you have any questions, please feel to contact us via "Ask seller a question" . We will reply your for email within 24 working hours.