3.5MHz 5W CW Transceiver by JF1OZL
I operated 3.5MHz SSB for two weeks. But 10W SSB was too weak to make CQ by myself. 3.5MHz band is very noisy in Japan. Therefore I decided to make and operate 3.5MHz CW with QRP.
http://www.intio.or.jp/jf10zl/35mcw.htm

3.5MHz 10W SSB Transceiver by JF1OZL
In week day I operate 7MHz CW on my shack. But in these days, on the 7MHz , my signal skips out from Japan and I can't contact any station after 10 o'clock. Therefore I decided to make 3.5MHz SSB and CW rigs.
http://www.intio.or.jp/jf10zl/3.5mssb.htm

80 Meter CW Transceiver door PA2OHH
80 meter band CW transceiver met een directe conversie ontvanger met zijband onderdrukking.
http://www.qsl.net/pa2ohh/98txrxnl.htm
 

80 Meter CW Five Watt QRP Transceiver by K3NG
This project originally started out on the bench as a 40 meter phone transceiver. In one evening I changed various parts to transform the project into an 80 meter rig.
http://anthony.good.googlepages.com/80mqrpcwtransceiver

80 meter QRPp Radio by WA6OTP
This is a new Transmitter/Receiver for backpacking. This has a 800 milliwatt transmitter and an NE602 receiver. It now has side tone and a PTO RIT.
http://www.wa6otp.com/80.htm

80m SSB & CW QRP superhet transceiver by S56AL
The 80m SSB & CW transceiver design is based on an already proven concept used in ATLAS amateur transistorised transceivers from 70's.
http://lea.hamradio.si/~s57nan/ham_radio/ssb_80m/ssb_80m.html

A Rig for the MAS Contest by KD1JV by KD1JV
The M.A.S., (Minimal Art Session) is a contest started by Dr. Harmut "Hal" Weber, DJ7ST. (Now a SK)The idea behind this contest is to encourage Hams to build and operate a rig using a minimal number of parts. The rig I came up with uses 51 parts for a complete transceiver, giving a 50% bonus.
http://kd1jv.qrpradio.com/MAS/MAS.htm
 

Eighty - Oner by SP5DDJ
For many Hams 80m band is most accesible, so I developed another one-watter based on VXO.
http://www.qsl.net/sp5ddj/eighty-oner.htm
 

FKM QRP 5 Tranceiver door PA3FKM
Dit ontwerp heb ik gemaakt naar aanleiding van veel opmerkingen van Robert over diverse andere ontwerpen voor eenvoudige kortegolf tranceivers met klein vermogen.
http://pascal.nedlinux.nl/zelfbouw/FKM-QRP-5.html

KEROKERO - 80m transceiver CW QSK by PY2OHH
The 80m band is a bit deserted! We decided to build something, this is the first project in a series, it is a transceiver with simple parts, with a direct conversion receiver and a basic 4W TX.
http://py2ohh.w2c.com.br/trx/kerokero/kerokero.htm

Optimist-80 by SM6LKM
A QRPp DSB transceiver for the 80 meter band (1 Watt P.E.P.).
http://home4.swipnet.se/~w-41522/qrproot.html
 

PIXIE 2 Transceiver G3LHJ's Version of WA6BOY's Tiny Rig
This modified version of W6BOY's little rig was published in Sprat number 88. The rig is designed for 80m and although very simple, it can give interesting results.
http://www.zerobeat.net/g3ycc/pixie2.htm

(Fairly) Simple SSB rig with PTT by KD1JV
This rig was inspired by the "unknown ham from Idaho" minimalist SSB rig.
http://kd1jv.qrpradio.com/ssbrig/SSB.HTM
 

SSB Receiver / Exciter and Linear amp by KD1JV
Unlike CW, where a couple of watts will make plenty of contacts, its hard to get anyone to talk to you on phone if your signal is weak. With this in mind, the original Simple SSB rig has been redesigned to add a 25 watt linear amp to it.
http://kd1jv.qrpradio.com/ssbrig2/SSB2.HTM

SSB Transceiver by EI9GQ
Now that people are getting married, and having babies on the internet, isn't it about time someone designed and built an SSB rig on the net?
http://homepage.eircom.net/~ei9gq/trx.html

SSB 75 Meter Transceiver by WA7JHZ
In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation.
http://www.qrp.pops.net/Idaho.asp

The AP-80 An Alternative Pixie by KD1JV
The Pixie is about the simplest rig ever devised, using just 2 transistors and a LM386 audio amp. Unfortunetly, it's also one of the poorest performing rigs ever devised. It's deficentcies are too numberus to list.
http://kd1jv.qrpradio.com/ap80/AP80.HTM

The FETer 80m CW “micro transceiver” by G3XBM
Some years ago a beautifully simple circuit for a 40m CW transceiver by W2UW was published in GQRP SPRAT.
This inspired me to have a go at an even simpler version for 80m using just 14 parts apart from the key and crystal earpiece.
http://homepage.ntlworld.com/lapthorn/feter.htm

The Micro-80 Mini Transceiver by RV3GM
The circuit is a simple QSK transceiver for 80 metres which could be adapted for other bands by changing the crystal and L,C in the output circuit.
http://www.qsl.net/g3pto/micro80.html

The uu80b - a 12 part 80m Micro Transceiver! by G3XBM
Just finishing off breadboarding a 12 parts QRP transceiver (plus hi-Z earpiece, xtal and key) for 80m CW. My name for the transceiver is the uu80b (micro micro 80m version B) and it is based on an idea by Miguel, PY2OHH.

Unichip 80m CW Transceiver by GØUPL
This project somehow grabbed my imagination. It's a complete 80m transceiver in one chip, the CA3086 transistor array. One transistor for crystal oscillator, one for a PA, and three for the audio amplification ...
http://www.hanssummers.com/unichip.html