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| To: | [email protected] |
|---|---|
| Subject: | LF: Re: Re: Re: Mini Whip and local noise |
| From: | "Roelof Bakker" <[email protected]> |
| Date: | Fri, 20 Jan 2006 17:15:12 +0100 |
| Delivery-date: | Fri, 20 Jan 2006 16:17:39 +0000 |
| Envelope-to: | [email protected] |
| References: | <[email protected]> <016101c61d02$12ceca40$2101a8c0@pcroelof> <[email protected]> <[email protected]> <[email protected]> <000901c61dac$20298450$ee9bfea9@oben> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Hello Peter and all,It seems that this transistor is no longer available. However, there is no real need for it as the J310 has been tested for IP2 and IP3 in the same test setup. At 12 V and a bias current of 10 mA the J310 has a IP2 of + 69 dBm and a IP3 of + 33.5 dBm, 1 dB compression point is in excess of + 22 dBm. Computer simulation of the J310 has confirmed these figures (or should I say vice versa?) Though the active device is important in a whip design, it is only part of a system. There is not much use to put much effort into acchieving the best possible performance, when this is not necessary for the reception system as a whole. 73 Roelof Bakker, pa0rdt |
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