Return to KLUBNL.PL main page
| To: | [email protected] |
|---|---|
| Subject: | Re: LF: Low frequency preselectors? |
| From: | "Roelof Bakker" <[email protected]> |
| Date: | Fri, 04 Sep 2009 09:54:07 -0000 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <005701ca2707$438a4570$0301a8c0@mal769a60aa920> <[email protected]> <009c01ca2731$2d5e0e60$0301a8c0@mal769a60aa920> <[email protected]> <847F3A04E31C413A81AD022BDC11AD46@JimPC> <5CA746FC83614040A4C4D8B6F9F2519E@NIS942960248> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Opera Mail/9.63 (Win32) |
Hello Jordan, Sorry for the delay, I just forgot to answer your question.In the attachment you will find the circuit diagram of a tuneable pre-amplifier. I have build several of these and the frequency response is quite narrow.The circuit has ample gain and using the rf-gain control, the tuned circuit is "damped", which broadens the response. The gain is realised by the impedance transformation of the tuned circuit, which results in considerable voltage gain. The amplifier is a voltage follower with an output impedance of 50 ohm. Best regards, Roelof Bakker, pa0rdt
|
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: LF: Low frequency preselectors?, John RABSON |
|---|---|
| Next by Date: | Re: LF: Wspr spots, John Andrews |
| Previous by Thread: | Re: LF: Low frequency preselectors?, John RABSON |
| Next by Thread: | Re: LF: Low frequency preselectors?, Jordan |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
