Palmy Electronic
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Description
BITX 4 Band with Linear Amplifier and AGC
Find me at
Palmy Electronic - Kebonsari, Kab. Madiun | Tokopedia
https://www.tokopedia.com/palmyelectronic
Toko Online Palmy Group Holding | Shopee Indonesia
https://shopee.co.id/wahyuhidayanto51
basically this series adopts BITX20. there are some changes such as a Band pass filter that can be selected by giving a 5 volt voltage to the BPF you want to activate. VFO in this design, replaced with input from multiband DDS. and the addition of AGC. For the rest, it's all the same as BITX20.
capacitor and inductor values ??for each band:
80M
L1 = L2 = 2.2uH
L3 = 4.7uH
C1 = C2 = 1.5nF
C3 = 680pF
40M
L1 = L2 = 1uH
L3 = 2.2uH
C1 = C2 = 820pF
C3 = 390pF
20M / 30M
L1 = L2 = 0.47uH
L3 = 1uH
C1 = C2 = 390pF
C3 = 180pF
15M / 17M / 10M
L1 = L2 = 0.33uH
L3 = 0.68uH
C1 = C2 = 180pF
C3 = 82pF
Feb 24,2020
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BITX 4 Band with Linear Amplifier and AGC
basically this series adopts BITX20. there are some changes such as a Band pass filter that can be selected by giving a 5 volt voltage to th
6437
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7.25 (7)
Published: Feb 24,2020
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