Uploaded August 2025 | Updated September 2026, 1 week ago
Hello Operators,
QRP is at the heart of this channel—but sometimes 5 to 10 watts just isn’t enough. In this video, I show you a real-world case where a Winlink session fails due to propagation, and how a compact HF amplifier like the DL4KA PA500 solves the problem—without compromising field portability or efficiency.
This is not about abandoning QRP. It’s about knowing when conditions demand more, and having the right tool in the kit when that happens.
You’ll see:
• When QRP hits its limits (Winlink session example)
• How the PA500 integrates with radios like the IC‑705 and TX‑500
• Specs that matter in the field: LDMOS-based Class AB, 11–15V input, rugged build
• Why this is a backup—not a baseline—in my portable HF strategy
Watch how to responsibly extend your QRP gear without going full QRO.
73
Julian oh8stn
Share URL: youtu.be/x77GsFs2qZ4
Looking for ways to support the blog & channel?
Buy one of my books: amazon.com/author/julian-oh8stn
#HFAmplifier #qrp #oh8stn
Hello Operators,
QRP is at the heart of this channel—but sometimes 5 to 10 watts just isn’t enough. In this video, I show you a real-world case where a Winlink session fails due to propagation, and how a compact HF amplifier like the DL4KA PA500 solves the problem—without compromising field portability or efficiency.
This is not about abandoning QRP. It’s about knowing when conditions demand more, and having the right tool in the kit when that happens.
You’ll see:
• When QRP hits its limits (Winlink session example)
• How the PA500 integrates with radios like the IC‑705 and TX‑500
• Specs that matter in the field: LDMOS-based Class AB, 11–15V input, rugged build
• Why this is a backup—not a baseline—in my portable HF strategy
Watch how to responsibly extend your QRP gear without going full QRO.
73
Julian oh8stn
Share URL: youtu.be/x77GsFs2qZ4
Looking for ways to support the blog & channel?
Buy one of my books: amazon.com/author/julian-oh8stn
#HFAmplifier #qrp #oh8stn
