Categories
Statistics
Flag Counter
Since 08.08.2014
Counts only, if "DNT = disabled".

Your IP is 44.211.31.134
ec2-44-211-31-134.compute-1.
Info
Valid HTML 4.01 Transitional Creative Commons Lizenzvertrag
rss
เราจะทำแบบวิศวกรผู้ยิ่งใหญ่
We love the King
24. July 2024
Your valuable opinion :
5 stars

Avg. 6.00 from 1 votes.



UpConverter_for_SDR_Callisto_ea.php    5504 Bytes    09-02-2024 15:36:08


UpConverter for SDR, Callisto e.a.


... but we use a +13 dBm Squarewave as LO ...








✈ Specifications




PARAMETERREMARKS
Supply+ 9 V, 46 mA
Input0.5 / 5 ... 36 MHz (depends on Mixer)
Output114 ... 150 ... 186 MHz




✈ Notes




This 'Converter-3' is a small gadget to expand the frequency range of an SDR (RTL) receiver. We use a high (+13 dBm) LO level to take into account the possible high levels in the shortwave band. There a different types of mixers possible. The ADE-42MH+ was in our treasure box.

As other deigners use lowpassfilters in conection with crystal oscillators, we verified, that a trapezoidal (squarewave) shape of the LO yields a lower conversion loss - and has no other disadvantages.


The SINE-LO
The SQUARE-LO


The only difference - besides the higher IF level - is, that a squarewave LO produces more powerful products higher order. As the IF is usually filtered, we do not consider this as a huge challenge.

This converter deliveres both sidebands, the LO-RF and the LO+RF. They are symmetrical around the 150 MHz carrier.




RF was 10 MHz, 0 dBm




✈ Downloads








✈ Share your thoughts



The webmaster does not read these comments regularely. Urgent questions should be send via email. Ads or links to completely uncorrelated things will be removed.


Your Browser says that you allow tracking. Mayst we suggest that you check that DNT thing ?

 
t1 = 6586 d

t2 = 260 ms

★ ★ ★  Copyright © 2006 - 2024 by changpuak.ch  ★ ★ ★

Impressum