WebThe Hammarlund HQ-145 is a single (below 10 MHz) or dual conversion (10 to 30 MHz) general coverage receiver. It is equipped with both a Lamb crystal filter and an IF T … http://amfone.net/Amforum/index.php?topic=45371.0
Hammarlund HQ-145
WebHere you find 142 models, 90 with images and 58 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil. All listed radios etc. from Hammarlund Mfg. Co. Inc.; WebFor all HQ.140.X receivers No. 299 and below the following change should be made on the schematic diagram, Fig. 7. The Line running up from R48 is connected to the top instead of the bottom of the S4 switch. For all HQ.140·X receivers No. 849 and below make the following change: Resistor R35 is 820K ohms (Hammarlund Part No. 19309-103) cypher tree
HQ-140-X COMMUNICATIONS RECEIVER - demajo.net
WebI had an old Hammarlund HQ-145 that was in only fair shape when I bought it at a garage sale, and one day the power transformer died, and I sold it to someone who restored old boat anchors. I looked around, and tried out several different radios, and finaly settled on the R-70. About two months after I bought it, the R71A appeared, of course. http://otttsite.x10host.com/hq-180/hq-180sch.htm WebI realise it's a cheapo piece of junk, but has a stated 10Meg impedence and has proven useful in the past for this kind of work. Manual is HQ-170 Issue No. 2. In the 170 manual, there is a 47K resistor in parallel with a 100K resistor to the screen and crystal. In the 170A manual, the 47K resistor has been eliminated. binance to nami wallet