Hi Skipp, What's a Helper RF millivoltmeter manual worth to you?
I have one that I will scan for you when I get back home in a couple of weeks. No charge. 73 Gary K4FMX > -----Original Message----- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > buil...@yahoogroups.com] On Behalf Of skipp025 > Sent: Thursday, December 25, 2008 1:27 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Re: Helper Instruments > > Hi Dan, > > Glad to see you chimed in on this thread. > > > "Dan Graybeal" <dangerousengineer...@...> wrote: > > The SM-512 is a service monitor that covers 1 to 512 MHz > > if memory serves correctly. > > I had incorrectly posted the follow up model as the SM-1024, but > it was actually the SM-1000 as later indicated. (I was thinking > in hex again...) > > > It has a built in Sinadder and Millivolt meter. The > > system was designed around a Bearcat scanner. When Bearcat > > quit making the scanner, the system was redesigned > > from scratch and expanded to go to 1GHz, hence the > > SM-1000. If you look at the boards inside the SM-512 > > you will be able to identify the Bearcat model from the > > processor board. > > And more than one of us learned to use a Bearcat Scanner > as a fairly strong signal source. > > Really neat Helper Instrument trivia... More than a few > of the (now retired) local/regional Comm Shop Owners > have told me stories of how a Helper Sales Rep would > often loan Sinadder and similar demo products out to a > shop to quickly prove their real on the service bench > dollar value. Not only were the Helper Products well > thought out, but those early sales folks including Bill > were quite innovative. > > > We made a bunch of neat stuff at Helper while Bill > > Detwiller (the owner) was still alive. > > I have a "transitional Helper Catalog" where shortly after > Bill's passing his daughter announced a plan to go forward > and continue operations. Not much is known to us the general > public about the "wind down" of production and operation of > Helper. As a Zetron Products Dealer one of the inside technical > products support people told me about their purchase of some > Helper Products, which were later discontinued as the Land > Mobile Industry started to fall out of bed. > > > I will look to see if I still have a users manual for > > either of these still around. > > I have a modest number of Helper Instrument Manuals but > nothing for the Service Monitors or the RF Millivolt Meter, > which I would pay dearly for (a copy of the RF mV Meter > manual). Of course anyone nice enough to share would know > I (or others) would pdf scan the manuals and donate copies > to the Repeater-Builder and other similar web sites. > > The Helper 800 cell antenna performance instrument works > fairly well for low 900 Amateur Band work. Not to mention the > even more rare 460 band version. > > cheers, > skipp > > skipp025 at yahoo.com > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
