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primodescription [2019/02/21 13:52]
df2et
primodescription [2019/03/18 18:22]
do1cgi [Re-aligning the RF components]
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 ==== Exchanging the crystal ==== ==== Exchanging the crystal ====
  
-Next is to exchange the crystal to get the LO to the correct frequency. You will need a crystal with 69.764583MHz to get the Skyper ​working on the (German) centralized DAPNET frequency of 439.9875 MHz. To remove the old crystal you can remove solder with a desoldering pump. +Next is to exchange the crystal to get the LO to the correct frequency. You will need a crystal with 69.764583MHz to get the Primo working on the (German) centralized DAPNET frequency of 439.9875 MHz. To remove the old crystal you can remove solder with a desoldering pump. 
  
 {{ :​primo:​primo_removed_crystal.jpg?​direct&​600 | Removed crystal}} {{ :​primo:​primo_removed_crystal.jpg?​direct&​600 | Removed crystal}}
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 When this is finished you can improve reception by tuning the antenna circuit to maximum signal strength. Therefore conncect your scope to pin 12 and tune to maximum signal by turning trimmer CT1 carefully. ​ When this is finished you can improve reception by tuning the antenna circuit to maximum signal strength. Therefore conncect your scope to pin 12 and tune to maximum signal by turning trimmer CT1 carefully. ​
  
-If all is done your Promo should receive messages from DAPNET network. You can test that using the "Send Message"​ function of UniPager which circumvents the DAPNET connection and sends out POCSAG calls directly.+If all is done your Primo should receive messages from DAPNET network. You can test that using the "Send Message"​ function of UniPager which circumvents the DAPNET connection and sends out POCSAG calls directly.
  
 ===== RIC programming ===== ===== RIC programming =====
primodescription.txt · Zuletzt geändert: 2022/01/11 18:09 von do1goe