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Re: 21.060 50mW TX


 

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Hi, Adam

I bought a 20M Pixie from you a little while?ago, and I am finally getting around to building it.

Most components are the same as the 40M version.? However, I'm not sure about the inductors.

INDUCTORS

Please verify my assumptions:

I received a black barrell-shaped inductor:? I measured it as 8.9 microHenries.? I think it is to replace the 22 microHenry inductor (L3 on the schematic)

I received an 84.7 microHenry inductor.? I think for the 20M Pixie, it replaces the 100 mcroHenry inductor (L2 on the schematic)

I also received a toroid and wire, which I assume I will use to create a 0.56 microHenry inductor.? I think it replaces the 1.0 microHenry inductor (L1 on the schematic).? I assume if I can find a 0.56 microHenry inductor in my junkbox I could use that instead?

CAPACITORS

Finally, KC9ON on his web-site suggested for 20m I should "replace C7 in the oscillator section to 92 pF"? However, the only C7 I see on the Pixie 2023 schematic is a 120 pF capacitor in the output section.

KC9ON also says you suggested I change the C2 100pF capacitor to a 47 pF capacitor on input to filter.? Again, C2 on my Pixie 2023 schematic is a 10 mF electrolytic in the audio section.? Which capacitor(s) on the CB am I to replace?? (I also plan to use a 2N2222 for my PA.)

I am OK with replacing the 470 pF capacitors with the 220 pF capacitors you sent me.

If you give me a hint on what capacitors I should put where I will appreciate it.

Thanks very much.? I am enjoying your radios you make.

73 de Gary W0ITT
ZSUGF@...?




Sent from


From: [email protected] <[email protected]> on behalf of Adam Rong <rongxh@...>
Sent: Sunday, August 25, 2024 6:10 AM
To: [email protected] <[email protected]>
Subject: [CRKits] 21.060 50mW TX
?

Guys,

I built a 15 meter QRPPP TX this weekend. See this post:

Thanks,

Adam

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