Loooking for a source for a schematic for a HF Receiver Model-R-1218/TRQ-30. It tunes .5 to 21 Mhz and was used as a direction finder for the TRQ-30 field radio direction finding system. Appreciate any help. 73, al, W4TUK (ispoulin at aol.com) Irene Jenkins ispoulin at aol.com