UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

g4wim_tim · 17th Dec 2018, 8:57 pm

As some of you may know I'm building a valve 160 / 80 / 60 mtr tx using a pair of 6146's in the final modulated by a pair of KT88's.

Aiming for about 70 watts carrier - similar to a Heathkit DX100 (probably could have bought one or even two for the cost of this build !).

Here are some pictures of the PSU chassis before final assembly.

Top left is the main HT / heater transformer.
Bottom left is a supplementary LT transformer and below that the HT choke and smoothing capacitors.
Top right is the 250V HT transformer for the exciter and to the left a couple of 85A2 to provide +85V for the VFO and -85V for negative bias.

As things progress I'll upload more pictures for comment etc.

17th Dec 2018, 8:57 pm	#1
g4wim_tim Pentode Join Date: Nov 2018 Location: Freckleton, Lancashire, UK. Posts: 232	160 /80 / 60 mtr AM TX project As some of you may know I'm building a valve 160 / 80 / 60 mtr tx using a pair of 6146's in the final modulated by a pair of KT88's. Aiming for about 70 watts carrier - similar to a Heathkit DX100 (probably could have bought one or even two for the cost of this build !). Here are some pictures of the PSU chassis before final assembly. Top left is the main HT / heater transformer. Bottom left is a supplementary LT transformer and below that the HT choke and smoothing capacitors. Top right is the 250V HT transformer for the exciter and to the left a couple of 85A2 to provide +85V for the VFO and -85V for negative bias. As things progress I'll upload more pictures for comment etc. Attached Thumbnails __________________ Building and tinkering for over 50 years, from 807's to digital amateur TV.