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1. [AMPS] Excess hfe and ft (score: 1): Author: pcmeas@hotmail.com (Arlen Mendelssohn); Date: Fri, 22 May 1998 13:38:56 PDT; Regarding the SS amps question, I am a bit surprised Jon didn't jump in. A very common technique for producing a solid state amp with very good IMD is to intentionally select devices whose gain is ve; /archives//html/Amps/1998-05/msg00491.html (9,304 bytes)
2. [AMPS] Excess hfe and ft (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 22 May 98 17:42:37 -0500; I didn't see the question posted...So I don't know what it was! :-) And perhaps I didn't have an answer or comment (it does happen sometimes!). Ok Arlen, I am confused here. You say that power FETs; /archives//html/Amps/1998-05/msg00492.html (8,827 bytes)
3. [AMPS] Excess hfe and ft (score: 1): Author: jtml@lanl.gov (John Lyles); Date: Fri, 22 May 1998 17:35:48 -0600; Hi, Jon (KE9NA) is correct: These are really taking the place in new RF power designs for UHF, that used to be bipolar. We designed an amplifier 2 years ago using the MRF 899, a bipolar for 150 W PEP; /archives//html/Amps/1998-05/msg00495.html (8,059 bytes)
4. [AMPS] Excess hfe and ft (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 22 May 1998 20:36:59 EDT; e at UHF. TV transmitters and cellular systems for high linearity Modern microwave technology will blow your mind John. I work...daily....on 38-40GHz xcvrs that will output +20dBm over 400 channels a; /archives//html/Amps/1998-05/msg00501.html (7,945 bytes)
5. [AMPS] Excess hfe and ft (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 22 May 98 20:14:57 -0500; the cousins. 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.; /archives//html/Amps/1998-05/msg00503.html (7,607 bytes)
6. [AMPS] Excess hfe and ft (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 22 May 98 20:23:53 -0500; Carl, is correct! It's amazing how far microwave amplifiers and such have progressed in the last 10 years. Just 5 or 6 years ago, no one was doing 1 watt amplifiers in industry standard plastic pack; /archives//html/Amps/1998-05/msg00507.html (7,894 bytes)

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