Little progress

Last week I worked on the 144 MHz FM transceiver.
See My 144 MHZ transceiver blog
Not much progress to report on the 50 MHz project this week.

I found out that the 50 MHz power module is available at
rfparts.com
This module is the best option. I have looked at other PA's. Lots of PA's can be found on the internet. Unfortunately a 200 mW in 10 Watt out PA suitable for SSB could not be found.

picture of 200 milli Watt TRX

Here is a picture of the current state of the project.














Top left: Receiver
Bottom left: VXO modulator IF filter
Middle: Preamp
Top right: 200 mW TX driver
Top right: Frequency counter

It has 200 milli Watt output. This should be enough to drive a power module. Those modules are hard to get though so I may have to make a PA myself.
TX and RX work. However more fine tuning is needed.

Start of Blog

I am building a 50 MHz SSB transceiver.

It will be a simple one. It will be vxo controlled in a small part of the 50 MHZ ssb band.

Specifications.
-Modulation USB
-Power 10 Watt
-frequency range 100 KHz

The design is made by borrowing parts from other designs. The IF section looks a lot like the BITX tranceiver. I have added AGC. Mixers are replaced by a SBL-1 alike mixer. IF is 6 MHz.
VXO is borrowed from another design. It uses a 22.1 MHz xtal. This signal is doubled.